Index of current genera in CAAB as at 14-MAR-2010

... (click on a genus name to retrieve currently valid species for that genus)

?Hippomedon .. an amphipod
Aaptos .. a sponge
Aatolana .. a sea louse
Abalistes .. a triggerfish
Abarenicola .. a polychaete worm
Abatus .. a heart urchin
Ablabys .. a fortesque
Ablennes .. a longtom
Aborolobatea .. an amphipod
Abra .. a bivalve
Abralia .. an armed squid or enope squid
Abraliopsis .. an armed squid or enope squid
Abranda .. a clam
Abroteia .. a red alga
Abudefduf .. a damselfish
Abyssarcturella .. an isopod
Abyssianira .. an isopod
Abyssorchomene .. an amphipod
Abyssothyris .. a brachiopod
Acaenosquilla .. a mantis shrimp
Acalyptophis .. a sea snake
Acandona .. an ostracod
Acanthacaris .. a true lobster or scampi
Acanthaluteres .. a leatherjacket
Acanthaphritis .. a duckbill
Acantharctus .. a shovel-nosed or slipper lobster
Acanthaspidia .. an isopod
Acanthaster .. a seastar
Acanthastrea .. a stony coral
Acanthaxius .. a slow prawn
Acanthella .. a sponge
Acanthephyra .. a carid shrimp
Acanthistius .. a rockcod
Acanthocepola .. a bandfish
Acanthochitona .. a chiton
Acanthochromis .. a damselfish
Acanthocidaris .. a sea urchin
Acanthocybium .. a mackerel
Acanthodesia .. a bryozoan
Acanthodoris .. a nudibranch
Acanthodraco .. an Antarctic dragonfish
Acanthogobius .. a goby
Acanthoica .. a coccolothophorid
Acanthoisis .. an octocoral or bamboo coral
Acantholithus .. a king crab
Acanthomunna .. an isopod
Acanthomysis .. a mysid
Acanthonotozomopsis .. an amphipod
Acanthonyx .. a spider crab
Acanthopagrus .. a bream
Acanthophora .. a red alga
Acanthophragma .. a bryozoan
Acanthophrys .. a spider crab
Acanthopleura .. a chiton
Acanthopriapulus .. a priapulan
Acanthorhabdus .. a sponge
Acanthosphex .. a velvetfish
Acanthosquilla .. a mantis shrimp
Acanthostracion .. a boxfish
Acanthostrongylophora .. a sponge
Acanthozoon .. a flatworm
Acanthurus .. a surgeonfish
Acanthus .. an angiosperm (sea holly family)
Acarnus .. a sponge
Acarobythites .. a live-bearing cusk
Acartia .. a calanoid copepod
Acasta .. a barnacle
Acaudina .. a holothurian
Accalathura .. an isopod
Acentrogobius .. a goby
Acentronura .. a pipefish
Acesta .. a file clam
Acetabularia .. a green alga
Acetes .. a penaeid prawn
Achaeus .. a spider crab
Achelia .. a pycnogonid
Acheliderma .. a sponge
Acheronaster .. a seastar
Achoerodus .. a wrasse
Achramorpha .. a calcareous sponge
Aciconula .. a caprellid amphipod
Acinetospora .. a brown alga
Acirsa .. a wentletrap
Aclophora .. creepers
Aclophoropsis .. creepers
Acodontaster .. a seastar
Acreichthys .. a leatherjacket
Acremodontina .. a gastropod
Acrilla .. a wentletrap
Acrocalanus .. a calanoid copepod
Acrocarpia .. a brown alga
Acrochaete .. a green alga
Acrochaetium .. a red alga
Acrochordus .. a file snake
Acrocirrus .. a polychaete worm
Acrocystis .. a red alga
Acroperus .. a water flea
Acropoma .. an ocean bass
Acropora .. a staghorn coral
Acrosorium .. a red alga
Acrosterigma .. a heart cockle
Acrosymphyton .. a red alga
Acrothamnion .. a red alga
Acrothamniopsis .. a red alga
Acrotrichium .. a brown alga
Acrotylus .. a red alga
Acryptolaria .. a hydroid
Actaea .. a black-fingered crab
Actaecia .. a terrestrial isopod
Actaeodes .. a black-fingered crab
Actaeomorpha .. a crab
Acteon .. a buuble shell
Actinernus .. a sea anemone
Actinia .. a sea anemone
Actinocucumis .. a holothurian
Actinoptychus .. a diatom
Actinopyga .. a holothurian
Actinostola .. a sea anemone
Actinothoe .. a sea anemone
Actinotrichia .. a red alga
Actumnus .. a hairy crab
Acutigebia .. a slow prawn
Acutiramus .. a copepod
Acutiserolis .. an isopod
Adacnarca .. a bivalve
Adagnesia .. an ascidian (sea squirt)
Adajinoperus .. an isopod
Adamnestia .. a bubble shell
Adamussium .. a scallop
Adelascopora .. a bryozoan
Adelophycus .. a red alga
Adenifera .. a bryozoan
Adenocystis .. a brown alga
Adeona .. a bryozoan
Adeonella .. a bryozoan
Adeonellopsis .. a bryozoan
Adipicola .. a mussel
Admetula .. a nutmeg shell
Adventor .. a velvetfish
Aega .. an isopod
Aegaeon .. a carid shrimp
Aegialitis .. an angiosperm (leadwort family)
Aegialonemertes .. a ribbon worm
Aegiceras .. an angiosperm (Myrsine family)
Aeginoides .. a caprellid amphipod
Aegires .. a nudibranch
Aenigmanemertes .. a ribbon worm
Aenigmathura .. an isopod
Aeodes .. a red alga
Aeoliscus .. a razorfish
Aequidens .. a cichlid
Aequorea .. a hydromedusa
Aesopia .. a sole
Aesopus .. a dove shell
Aestabdella .. a fish leech
Aetapcus .. a prowfish
Aetea .. a bryozoan
Aethaloperca .. a rockcod
Aetheobdella .. a leech
Aetheorhynchus .. a ribbon worm
Aethotaxis .. an icefish
Aethra .. a crab
Aetideus .. a calanoid copepod
Aetiopedes .. an amphipod
Aetobatus .. an eagle ray
Aetomylaeus .. an eagle ray
Aeverrillia .. a bryozoan
Aforia .. a gastropod
Africotriton .. a nutmeg shell
Afrocardium .. a heart cockle
Afrocucumis .. a holothurian
Afrolittorina .. a periwinkle
Afurcagobius .. a goby
Agathotanais .. a tanaidacean
Agelas .. a sponge
Aglaometra .. a crinoid
Aglaophamus .. a polychaete worm
Aglaophenia .. a hydroid
Aglaothamnion .. a red alga
Agnezia .. an ascidian (sea squirt)
Agononida .. a squat lobster
Agostodina .. an isopod
Agrostichthys .. an oarfish
Ahnfeltiopsis .. a red alga
Ailsastra .. a seastar
Aimulosia .. a bryozoan
Ainigmaptilon .. an octocoral
Ainudrilus .. a blood worm
Aioliops .. a dartfish
Aipysurus .. a sea snake
Aka .. a sponge
Akarotaxis .. an Antarctic dragonfish
Akelbaster .. a seastar
Akera .. a sea slug
Akibumia .. a gastropod
Alaba .. a gastropod
Alabes .. a clingfish
Alachosquilla .. a mantis shrimp
Alacia .. an ostracod
Alainodaeus .. a black-fingered crab
Alainodromia .. a sponge crab
Alainopasiphaea .. a carid shrimp
Alathyria .. a freshwater mussel
Alatina .. a box jellyfish
Alatotrochus .. a stony coral
Albanidrilus .. a blood worm
Alboglossiphonia .. a leech
Albula .. a bonefish
Albunea .. a mole crab
Albunione .. a parasitic isopod
Alciopa .. a polychaete worm
Alcirona .. an isopod
Alcockianum .. a stalked barnacle
Alcyna .. a top shell
Alcyonium .. a soft coral
Alcyonosyllis .. a polychaete worm
Aldersladia .. a hydromedusa
Aldingia .. a brachiopod
Aldrichetta .. a mullet
Aldrovandia .. a halosaur
Alectis .. a trevally
Alectona .. a boring sponge
Alectryonella .. an oyster
Alepes .. a trevally
Alepisaurus .. a lancetfish
Alepocephalus .. a slickhead
Alertigorgia .. an octocoral
Alexandrella .. an amphipod
Alexandrium .. a dinoflagellate
Algirosphaera .. a coccolothophorid
Aliaporcellana .. a porcelain crab
Alima .. a mantis shrimp
Alimopsoides .. a mantis shrimp
Alionematichthys .. a live-bearing cusk
Alionematichthys .. a live-bearing cusk
Alisphaera .. a coccolothophorid
Alitropus .. an isopod
Allanaspides .. a syncarid
Allaxius .. a slow prawn
Allenichthys .. a frogfish
Allia .. a polychaete worm
Allips .. a snake eel
Allochroa .. an air-breathing snail
Allocyttus .. an oreodory
Allodiastylis .. a cumacean
Allogalathea .. a squat lobster
Allomicrodesmus .. a wriggler
Allomycterus .. a porcupinefish
Alloniscus .. a terrestrial isopod
Allopontonia .. a carid shrimp
Allorchestes .. an amphipod
Allostichaster .. a seastar
Allothunnus .. a mackerel
Alluroteuthis .. a neosquid
Alocospira .. an olive shell
Alona .. a water flea
Alonella .. a water flea
Alope .. a hump-backed shrimp
Alopias .. a thresher shark
Alox .. a pebble crab
Alphasarsiella .. an ostracod
Alpheopsis .. a snapping shrimp
Alpheus .. a snapping shrimp
Alpysiopsis .. a sea slug
Althoffia .. a larvacean
Altispecula .. a creeper
Altiverruca .. a barnacle
Altopontonia .. a carid shrimp
Altosquilla .. a mantis shrimp
Aluterus .. a leatherjacket
Alveopora .. a stony coral
Alveosphaera .. a coccolothophorid
Amaeana .. a polychaete worm
Amakusanthura .. an isopod
Amalda .. an olive shell
Amanses .. a leatherjacket
Amansia .. a red alga
Amarinus .. a false spider crab
Amaroucium .. an ascidian (sea squirt)
Amarsipus .. a driftfish
Amaryllis .. an amphipod
Amastigia .. a bryozoan
Amathia .. a bryozoan
Amathillopsis .. an amphipod
Ambassis .. a glassfish
Ambiaxius .. a slow prawn
Ambicholestes .. an amphipod
Ambiserrula .. a flathead
Amblychilepas .. a keyhole limpet
Amblycirrhitus .. a hawkfish
Amblyeleotris .. a goby
Amblygaster .. a herring
Amblyglyphidodon .. a damselfish
Amblygobius .. a goby
Amblyops .. a mysid
Amblyosyllis .. a polychaete worm
Amblyotrypauchen .. a goby
Amblypneustes .. a sea urchin
Amblypomacentrus .. a damselfish
Amblyraja .. a skate
Ambuscintilla .. a bivalve
Ameloctopus .. an octopus
Amesopous .. an isopod
Amicibdella .. a leech
Amigdoscalpellum .. a stalked barnacle
Amissidens .. a forktail catfish
Ammodytoides .. a sandlance
Ammonemertes .. a ribbon worm
Ammothea .. a pycnogonid
Ammothella .. a pycnogonid
Ammotretis .. a righteye flounder
Ammotrophus .. a sand dollar
Amniataba .. a grunter
Amoenothamnion .. a red alga
Amoria .. a volute
Amorphinopsis .. a sponge
Amoya .. a goby
Ampelisca .. an amphipod
Amphiastrella .. a sponge
Amphiblestrum .. a bryozoan
Amphibolis .. a seagrass
Amphichaetodon .. a butterflyfish
Amphicorina .. a fan worm
Amphicteis .. a polychaete worm
Amphictene .. a mason worm
Amphicyclus .. a holothurian
Amphiglena .. a fan worm
Amphilectus .. a sponge
Amphilimna .. a brittlestar
Amphilochus .. an amphipod
Amphimedon .. a sponge
Amphimetra .. a crinoid
Amphinema .. a hydroid
Amphinome .. a polychaete worm
Amphinomia .. a sponge
Amphiodia .. a brittlestar
Amphionides .. a malacostracan
Amphiophiura .. a brittlestar
Amphioplus .. a brittlestar
Amphipholis .. a brittlestar
Amphipleura .. a diatom
Amphiplexia .. a red alga
Amphipneustes .. a heart urchin
Amphiporus .. a ribbon worm
Amphiprion .. a damselfish
Amphiroa .. a red alga
Amphisbetia .. a hydroid
Amphisolenia .. a dinoflagellate
Amphisopus .. a phreatic isopod
Amphistigma .. a brittlestar
Amphitethya .. a sponge
Amphithyris .. a brachiopod
Amphithyrus .. a hyperid amphipod
Amphitretus .. an octopod
Amphitrite .. a polychaete worm
Amphitritides .. a polychaete worm
Amphiura .. a brittlestar
Amphora .. a diatom
Amphoriscus .. a calcareous sponge
Amphoroidea .. an isopod
Amphoroidella .. an isopod
Ampithoe .. an amphipod
Amplicaria .. a tube worm
Amplisiphonia .. a red alga
Amsichthys .. a dottyback
Amusium .. a scallop
Amygdalum .. a mussel
Anabaena .. a blue-green alga (cyanobacterium)
Anabas .. a climbing perch
Anacanthobythites .. a live-bearing cusk
Anacanthobythites .. a live-bearing cusk
Anacanthoica .. a coccolothophorid
Anacanthus .. a leatherjacket
Anachis .. a dove shell
Anacinetops .. a spider crab
Anacropora .. a staghorn coral
Anadara .. an ark shell
Anadistoma .. an ascidian (sea squirt)
Anadyomene .. a green alga
Anaitides .. a polychaete worm
Anakinetica .. a brachiopod
Anametalia .. a heart urchin
Anamixilla .. a calcareous sponge
Anamixis .. an amphipod
Anampses .. a wrasse
Ananthura .. an isopod
Anaora .. a dragonet
Anapagurus .. a hermit crab
Anapella .. a surf clam
Anapontonia .. a carid shrimp
Anarchias .. a moray eel
Anarthropora .. a bryozoan
Anaskopora .. a bryozoan
Anaspides .. a syncarid
Anasterias .. a seastar
Anatoma .. a slit shell
Anchialina .. a mysid
Anchisquilla .. a mantis shrimp
Anchisquilloides .. a mantis shrimp
Anchistioides .. a carid shrimp
Anchistus .. a carid shrimp
Anchistylis .. a cumacean
Anchitosia .. a seastar
Anchylomera .. a hyperid amphipod
Ancillista .. an olive shell
Ancistrocheirus .. a squid
Ancistroteuthis .. a hooked squid
Ancorina .. a sponge
Ancylocheles .. a porcelain crab
Ancyroniscus .. a parasitic isopod
Andaniella .. an amphipod
Andaniexis .. an amphipod
Andaniotes .. an amphipod
Andora .. a seastar
Andricophiloscia .. a terrestrial isopod
Anelassorhynchus .. an echiuran worm
Anfractutofilum .. a red alga
Angaria .. a dolphin shell
Angeliera .. an isopod
Anguilla .. a freshwater eel
Anguinella .. a bryozoan
Anguloscalpellum .. a stalked barnacle
Angulus .. a clam
Aniculus .. a hermit crab
Anilocra .. an isopod
Anisodonta .. a bivalve
Anisomysis .. a mysid
Anisoschizus .. a red alga
Annachlamys .. a scallop
Annandaleum .. a stalked barnacle
Annectocyma .. a bryozoan
Annella .. an octocoral
Annexos .. a tanaidacean
Annisis .. an octocoral or bamboo coral
Anodonta .. a cockle
Anodontia .. a cockle
Anodontiglanis .. an eeltail catfish
Anodontostoma .. a herring
Anoediceros .. an amphipod
Anomalocardia .. a venus shell
Anomalops .. a flashlight fish
Anomia .. a jingle shell
Anomocora .. a stony coral
Anomodoryx .. a sponge
Anomoianthella .. a sponge
Anomomycale .. a sponge
Anomomyxilla .. a sponge
Anoplocapros .. a boxfish
Anoplodactylus .. a pycnogonid
Anoplogaster .. a fangtooth
Anoplonida .. a squat lobster
Anoplosolenia .. a coccolothophorid
Anoplosyllis .. a polychaete worm
Anopsilana .. a sea louse
Anoropallene .. a pycnogonid
Anoteropora .. a bryozoan
Anotopterus .. a daggertooth
Anotrichium .. a red alga
Anous .. a gull, skua, noddy or tern
Anoxycalyx .. a glass sponge
Anoxypristis .. a sawfish
Anphilaemon .. a leech
Anseropoda .. a seastar
Antarcticaetos .. a bryozoan
Antarctodrilus .. an oligochaete worm
Antarctolineus .. a ribbon worm
Antarctomysis .. a mysid
Antarctonemertes .. a ribbon worm
Antarctoneptunea .. a whelk
Antarctosaccion .. a green alga
Antarcturus .. an isopod
Antarctus .. a shovel-nosed or slipper lobster
Antatelson .. an amphipod
Anteaeolidiella .. a nudibranch
Antedon .. a crinoid
Antennarius .. a frogfish
Antennatus .. a frogfish
Antennella .. a hydroid
Anthaster .. a seastar
Anthemiphyllia .. a stony coral
Anthenea .. a seastar
Anthenoides .. a seastar
Anthias .. a rockcod
Antho .. a sponge
Anthohebella .. a hydroid
Anthometra .. a crinoid
Anthomuda .. an isopod
Anthoptilum .. a seapen
Anthosphaera .. a coccolothophorid
Anthothoe .. a sea anemone
Antichthomysis .. a mysid
Antigona .. a venus shell
Antigonia .. a deepsea boarfish
Antimargarita .. a top shell
Antimora .. a morid cod
Antipodeus .. an amphipod
Antipodocottus .. a sculpin
Antipodrilus .. a blood worm
Antisabia .. a horse hoof limpet
Antithamnion .. a red alga
Antithamnionella .. a red alga
Antrocentrum .. a red alga
Anuropodione .. a parasitic isopod
Anyperodon .. a rockcod
Aonides .. a polychaete worm
Aora .. an amphipod
Aoroides .. an amphipod
Apanthura .. an isopod
Apanthuropsis .. an isopod
Apatopygus .. a heart urchin
Apemosphaera .. an isopod
Aphanizomenon .. a blue-green alga (cyanobacterium)
Aphanocladia .. a red alga
Aphanopus .. a hairtail
Aphareus .. a tropical snapper
Aphelochaeta .. a polychaete worm
Aphelodactyla .. a holothurian
Aphelodoris .. a nudibranch
Aphrocallistes .. a glass sponge
Aphroceras .. a calcareous sponge
Aphrodita .. a polychaete worm
Aphrogenia .. a polychaete worm
Aphyonus .. a gelatinous cuskeels
Apicalia .. an eulima
Apidioplana .. a flatworm
Apionsoma .. a sipunculan worm
Apistops .. a waspfish
Apistus .. a waspfish
Apjohnia .. a green alga
Aplidiopsis .. an ascidian (sea squirt)
Aplidium .. an ascidian (sea squirt)
Aploactis .. a velvetfish
Aploactisoma .. a velvetfish
Aplodactylus .. a marblefish
Aplysia .. a sea hare
Aplysilla .. a sponge
Aplysina .. a sponge
Aplysinella .. a sponge
Aplysinopsis .. a sponge
Apocorophium .. an amphipod
Apocryptodon .. a goby
Apocyclops .. a cyclopoid copepod
Apoglossum .. a red alga
Apogon .. a cardinalfish
Apogonichthyoides .. a cardinalfish
Apogonichthys .. a cardinalfish
Apogonops .. an ocean bass
Apolemichthys .. an angelfish
Apophlaea .. a red alga
Apopontonia .. a carid shrimp
Apopterygion .. a triplefin
Aporocidaris .. a sea urchin
Aporometra .. a crinoid
Aporops .. a false basslet
Aprion .. a tropical snapper
Apristurus .. a catshark
Apseudes .. a tanaidacean
Apseudomorpha .. a tanaidacean
Apsolidium .. a holothurian
Aptenodytes .. a penguin
Apterichtus .. a snake eel
Aptychotrema .. a guitarfish
Aquilonastra .. a seastar
Arabella .. a polychaete worm
Arabelloneris .. a polychaete worm
Aracana .. a boxfish
Arachnoides .. a sand dollar
Arachnopusia .. a bryozoan
Araeosoma .. a sea urchin
Araiopontonia .. a carid shrimp
Araphura .. a tanaidacean
Araphuroides .. a tanaidacean
Arca .. an ark shell
Arcania .. a pebble crab
Archaeobemlos .. an amphipod
Archaeperidinium .. a dinoflagellate
Archamia .. a cardinalfish
Archaster .. a seastar
Archasterope .. an ostracod
Archedota .. a holothurian
Archepleuroxus .. a water flea
Archiacasta .. a barnacle
Archidoris .. a nudibranch
Archimediella .. a screw shell
Archiminolia .. a top shell
Architectonica .. a gastropod
Architeuthis .. a giant squid
Arcopaginula .. a clam
Arcopella .. a clam
Arcopsis .. a cockle
Arcoscalpellum .. a stalked barnacle
Arcotheres .. a pea crab
Arctides .. a shovel-nosed or slipper lobster
Arctocephalus .. an eared seal
Arctozenus .. a barracudina
Arcturides .. an isopod
Arcuatula .. a mussel
Arcygobius .. a goby
Arenicola .. a polychaete worm
Arenifodiens .. a mussel
Arenigobius .. a goby
Arenosclera .. a sponge
Areschougia .. a red alga
Arete .. a snapping shrimp
Aretopsis .. a snapping shrimp
Argalista .. a top shell
Argathona .. an isopod
Argentina .. a herring smelt
Argilloecia .. an ostracod
Argobuccinum .. a triton
Argonauta .. a paper nautilus
Argopecten .. a scallop
Argyripnus .. a hatchetfish
Argyropelecus .. a hatchetfish
Argyropeza .. a creeper
Argyrops .. a bream
Argyrosomus .. a jewfish
Argyrotheca .. a brachiopod
Arhynchite .. an echiuran worm
Arichlidon .. a polychaete worm
Aricidea .. a polychaete worm
Ariomma .. an eyebrow fish
Ariosoma .. a conger eel
Aristaeomorpha .. a penaeid prawn
Aristaeopsis .. a penaeid prawn
Aristeus .. a penaeid prawn
Aristostomias .. a loosejaw
Armadillogorgia .. an octocoral
Armadilloniscus .. a terrestrial isopod
Armandia .. a polychaete worm
Armatobalanus .. a barnacle
Arnoglossus .. a lefteye flounder
Arossella .. a coral barnacle
Arothron .. a toadfish
Aroui .. an amphipod
Arranooba .. a polychaete worm
Arrhamphus .. a garfish
Arripis .. an Australian salmon
Artedidraco .. a barbled plunderfish
Artemisina .. a sponge
Arthritica .. a bivalve
Arthrocardia .. a red alga
Arthrocladia .. a red alga
Arthropoma .. a bryozoan
Asajirus .. an ascidian (sea squirt)
Asaphis .. a bivalve
Asbestopluma .. a sponge
Ascaltis .. a calcareous sponge
Ascandra .. a calcareous sponge
Ascidia .. an ascidian (sea squirt)
Ascidiella .. an ascidian (sea squirt)
Ascidiophilla .. a flatworm
Ascionana .. an isopod
Asclerocheilus .. a polychaete worm
Ascobulla .. a bubble shell
Ascorhis .. a hydrobiid snail
Ascorhynchus .. a pycnogonid
Ascute .. a calcareous sponge
Aseraggodes .. a sole
Ashtoret .. a moon crab
Asparagopsis .. a red alga
Aspasmogaster .. a clingfish
Aspella .. a gastropod
Asperaxis .. an octocoral
Aspericreta .. a bryozoan
Asperiscala .. a wentletrap
Asperococcus .. a brown alga
Aspidodiadema .. a sea urchin
Aspidontus .. a blenny
Aspidopholas .. a piddock
Aspidosiphon .. a sipunculan worm
Aspidostoma .. a bryozoan
Asquamiceps .. a slickhead
Assessor .. a prettyfin
Assiculoides .. a dottyback
Assiculus .. a dottyback
Assurger .. a hairtail
Astacilla .. an isopod
Astacopsidrilus .. an oligochaete worm
Astacopsis .. a freshwater crayfish or yabby
Astarte .. a bivalve
Astele .. a top shell
Asteracmaea .. a limpet
Asterias .. a seastar
Asterionella .. a diatom
Asterocarpa .. an ascidian (sea squirt)
Asteroceras .. a snakestar
Asterodiscides .. a seastar
Asterolamia .. an eulima
Asterolampra .. a diatom
Asteromenia .. a red alga
Asterometra .. a crinoid
Asteromorpha .. a snakestar
Asteromphalus .. a diatom
Asteronema .. a brown alga
Asteronyx .. a snakestar
Asteroporpa .. a basketstar
Asteropsis .. a seastar
Asteropterygion .. an ostracod
Asteropus .. a sponge
Asterorhombus .. a lefteye flounder
Asteroschema .. a snakestar
Asterropteryx .. a goby
Asthenomacrurus .. a whiptail
Asthenosoma .. a sea urchin
Astochoporella .. a bryozoan
Astralium .. a turban shell
Astrangia .. a stony coral
Astreopora .. a staghorn coral
Astreptosyllis .. a polychaete worm
Astroboa .. a basketstar
Astrobrachion .. a snakestar
Astroceras .. a snakestar
Astrochalcis .. a basketstar
Astrochlamys .. a basketstar
Astrocladus .. a basketstar
Astroclon .. a basketstar
Astrodia .. a snakestar
Astroglymna .. a basketstar
Astrogymnotes .. a brittlestar
Astrohamma .. a basketstar
Astromesites .. a seastar
Astronesthes .. a snaggletooth
Astropecten .. a seastar
Astrophiura .. a brittlestar
Astropyga .. a sea urchin
Astrosclera .. a sponge
Astrosierra .. a basketstar
Astrostole .. a seastar
Astrothorax .. a basketstar
Astrothrombus .. a basketstar
Astrotia .. a sea snake
Astrotoma .. a basketstar
Astrurus .. an isopod
Asychis .. a polychaete worm
Asymbolus .. a catshark
Ataxocerithium .. a creeper
Ateleopus .. a jellynose fish
Atelomycterus .. a catshark
Atergatis .. a black-fingered crab
Atergatopsis .. a black-fingered crab
Athanas .. a snapping shrimp
Athanopsis .. a snapping shrimp
Atherinason .. a hardyhead
Atherinomorus .. a hardyhead
Atherinosoma .. a hardyhead
Atherion .. a hardyhead
Athleta .. a volute
Atlanta .. a pelagic gastropod
Atolla .. a jellyfish
Atopobathynella .. a syncarid
Atractoscion .. a jewfish
Atrina .. a razor clam
Atriolum .. an ascidian (sea squirt)
Atrobucca .. a jewfish
Atrosalarias .. a blenny
Attheyella .. a copepod
Attiliosa .. a gastropod
Atule .. a trevally
Atylus .. an amphipod
Atypichthys .. a sweep
Atypopenaeus .. a penaeid prawn
Atys .. a bubble shell
Auchenoplax .. a polychaete worm
Audouinella .. a red alga
Augeneria .. a polychaete worm
Augeneriella .. a fan worm
Augenerilepidonotus .. a scale worm
Aulacocephalus .. a soapfish
Aulacolambrus .. a crabs
Aulacomya .. a mussel
Aulactinia .. a sea anemone
Aulastomatomorpha .. a slickhead
Auletta .. a sponge
Aulites .. a brachiopod
Aulocalyx .. a glass sponge
Aulocyathus .. a stony coral
Aulodrilus .. a blood worm
Aulohalaelurus .. a catshark
Aulopocella .. a bryozoan
Aulopus .. a threadsail
Aulorossella .. a glass sponge
Aulorrhiza .. a calcareous sponge
Aulospongus .. a sponge
Aulostomus .. a trumpetfish
Aulotrachichthys .. a roughy
Aurelia .. a jellyfish
Auriculastra .. an air-breathing snail
Ausatelson .. an amphipod
Austraeolis .. a nudibranch
Australatya .. a shrimp
Australaugeneria .. a scale worm
Australerythrops .. a mysid
Australhoekia .. a coral barnacle
Australiaster .. a seastar
Australineus .. a ribbon worm
Australobranchipus .. a fairy shrimp
Australocamptus .. a copepod
Australocarcinus .. a crab
Australocaris .. a slow prawn
Australochydorus .. a water flea
Australocnus .. a holothurian
Australocyathus .. a stony coral
Australoecetes .. an amphipod
Australogorgia .. an octocoral
Australogyra .. a stony coral
Australomedusa .. a hydroid
Australomicrodeutopus .. an amphipod
Australomussa .. a stony coral
Australomysis .. a mysid
Australonereis .. a polychaete worm
Australonoe .. a scale worm
Australonuphis .. a polychaete worm
Australophocoena .. a porpoise
Australoplax .. a crab
Australospio .. a polychaete worm
Australostichopus .. a holothurian
Australscalpellum .. a stalked barnacle
Austrarcturella .. an isopod
Austrasphaera .. an isopod
Austriella .. a cockle
Austroassiminea .. a gastropod
Austrobalanus .. a barnacle
Austrobdella .. a fish leech
Austrocardiella .. a bivalve
Austrocarina .. a gastropod
Austrochaetilia .. an isopod
Austrochiltonia .. an amphipod
Austrochlamys .. a scallop
Austrocochlea .. a top shell
Austrocrangonyx .. an amphipod
Austrocylichna .. a bubble shell
Austrocypraea .. a cowrie
Austrodecus .. a pycnogonid
Austrodevonia .. a bivalve
Austrodrillia .. a gastropod
Austrodromidia .. a sponge crab
Austroflustra .. a bryozoan
Austrogammarus .. an amphipod
Austroharpa .. a harp shell
Austrolabrus .. a wrasse
Austrolaenilla .. a scale worm
Austrolepidopa .. a mole crab
Austrolethops .. a goby
Austroleucon .. a cumacean
Austrolibinia .. a spider crab
Austroliotia .. a turban shell
Austrolithon .. a red alga
Austrolittorina .. a periwinkle
Austromaera .. an amphipod
Austromegabalanus .. a barnacle
Austrometra .. a crinoid
Austromitra .. a costellate mitre shell
Austronanus .. an isopod
Austronereia .. a brown alga
Austronibea .. a jewfish
Austroniscus .. an isopod
Austropallene .. a pycnogonid
Austropenaeus .. a penaeid prawn
Austropeplea .. a freshwater snail
Austropheonoides .. an amphipod
Austrophyllis .. a red alga
Austropyrgus .. a hydrobiid snail
Austroraptus .. a pycnogonid
Austrorossia .. a dumpling squid
Austrosignum .. an isopod
Austrosquilla .. a mantis shrimp
Austrotanais .. a tanaidaceans
Austrothelphusa .. a freshwater crab
Austrotrochaclis .. a gastropod
Austroturris .. a gastropod
Autolytus .. a polychaete worm
Automate .. a snapping shrimp
Autonoe .. an amphipod
Auxis .. a mackerel
Aviassiminea .. a gastropod
Avicennia .. an angiosperm (Verbena family)
Avocettina .. a snipe eel
Avrainvillea .. a green alga
Awaous .. a goby
Axechina .. a sponge
Axinella .. a sponge
Axinosia .. a sponge
Axinyssa .. a sponge
Axiogynodiastylis .. a cumacean
Axionice .. a polychaete worm
Axiopsis .. a slow prawn
Axiothella .. a polychaete worm
Axius .. a slow prawn
Axos .. a sponge
Azorinus .. a bivalve
Azotostoma .. an amphipod
Azygocypridina .. an ostracod
Azygopus .. a righteye flounder
Babylonia .. a whelk
Bachelotia .. a brown alga
Bacillaria .. a diatom
Bacteriastrum .. a diatom
Bactronophorus .. a ship worm
Baeolidia .. a nudibranch
Baffinia .. a polychaete worm
Bajacalifornia .. a slickhead
Bajalus .. a sponge
Balaenoptera .. a rorqual
Balanoglossus .. an enteropneust
Balanophyllia .. a stony coral
Balanus .. a barnacle
Baldockia .. a red alga
Balechina .. a dinoflagellate
Balistapus .. a triggerfish
Balistes .. a triggerfish
Balistoides .. a triggerfish
Ballia .. a red alga
Balliella .. a red alga
Balssia .. a carid shrimp
Bamarooka .. an amphipod
Banareia .. a black-fingered crab
Bangia .. a red alga
Banjos .. a banjofish
Bankia .. a ship worm
Bankivia .. a top shell
Bannereus .. a snapping shrimp
Barabattoia .. a stony coral
Barantolla .. a polychaete worm
Barathronus .. a gelatinous cuskeels
Barbatia .. an ark shell
Barbonymus .. a carp
Barbourisia .. a velvet whalefish
Barbronia .. a leech
Barbuligobius .. a goby
Barentsia .. a kamptozoan (entoproct)
Barnea .. a piddock
Barrimysia .. a bivalve
Baruna .. a crab
Bascanichthys .. a snake eel
Baseodiscus .. a ribbon worm
Basilissa .. a gastropod
Basilometra .. a crinoid
Bassanago .. a conger eel
Basserolis .. an isopod
Bassethullia .. a chiton
Bassianobdella .. a leech
Bassina .. a venus shell
Bassozetus .. a cuskeel
Batedotea .. an isopod
Batella .. a snapping shrimp
Bathochordaeus .. a larvacean
Bathophilus .. a scaleless dragonfish
Bathothauma .. a bathyscaphoid squid
Bathoxiphus .. a tusk shell
Bathyamaryllis .. an amphipod
Bathyaploactis .. a velvetfish
Bathyarca .. an ark shell
Bathyarctus .. a shovel-nosed or slipper lobster
Bathybadistes .. an isopod
Bathybembix .. a top shell
Bathyberthella .. a side-gill slug
Bathybiaster .. a seastar
Bathycallionymus .. a dragonet
Bathyclupea .. a deepsea herring
Bathycongrus .. a conger eel
Bathycopea .. an isopod
Bathycorbis .. a bivalve
Bathydomus .. a whelk
Bathydoris .. a nudibranch
Bathydorus .. a glass sponge
Bathydraco .. an Antarctic dragonfish
Bathydrilus .. a blood worm
Bathygadus .. a rat-tail
Bathygnathia .. an isopod
Bathygobius .. a goby
Bathylagichthys .. a deepsea smelt
Bathylagoides .. a deepsea smelt
Bathylagus .. a deepsea smelt
Bathylasma .. a barnacle
Bathyleberis .. an ostracod
Bathymetra .. a crinoid
Bathynella .. a syncarid
Bathynomus .. a sea louse
Bathypaguropsis .. a hermit crab
Bathypalaemonella .. a carid shrimp
Bathypathes .. a black coral
Bathypectinura .. a brittlestar
Bathypera .. an ascidian (sea squirt)
Bathyphylax .. a deepwater tripodfish
Bathypilumnus .. a hairy crab
Bathyplotes .. a holothurian
Bathypoma .. an amphipod
Bathypora .. a bryozoan
Bathyprion .. a slickhead
Bathypterois .. a spiderfish
Bathyraja .. a skate
Bathyraja .. a skate
Bathysauroides .. a flathead lizardfish
Bathysauropsis .. a black deepsea lizardfish
Bathysaurus .. a deepsea lizardfish
Bathysquilla .. a mantis shrimp
Bathystethus .. a knifefish
Bathystylodactylus .. a carid shrimp
Bathytanais .. a tanaidaceans
Bathyteuthis .. a deepsea squid
Bathytoma .. a gastropod
Bathytroctes .. a slickhead
Bathytyphlops .. a spiderfish
Bathyuroconger .. a conger eel
Bathyxiphus .. a glass sponge
Bathyxylophila .. a gastropod
Batillariella .. a mud creeper
Batissa .. a freshwater cockle
Batrachomoeus .. a frogfish
Batzella .. a sponge
Beaglichthys .. a live-bearing cusk
Beania .. a bryozoan
Beckerella .. a red alga
Beddomeia .. a hydrobiid snail
Beguina .. a cockle
Belalora .. a gastropod
Beliops .. a spiny basslet
Bellerochea .. a diatom
Bellidilia .. a pebble crab
Belloliva .. an olive shell
Bellonella .. a soft coral
Bellotia .. a brown alga
Belonepterygion .. a spiny basslet
Belonoperca .. a soapfish
Belosquilla .. a mantis shrimp
Belura .. an isopod
Belyaevostella .. a seastar
Bembicium .. a periwinkle
Bembradium .. an ocean perch
Bembras .. a flathead
Bembrops .. a duckbill
Bemlos .. an amphipod
Bennettiella .. a ribbon worm
Benthalbella .. a pearleye
Benthesicymus .. a penaeid prawn
Bentheuphausia .. a euphausiid
Benthocardiella .. a bivalve
Benthochascon .. a swimming crab
Benthoctopus .. an octopus
Benthodesmus .. a hairtail
Benthodorbis .. a freshwater snail
Benthodytes .. a holothurian
Benthofascis .. a gastropod
Benthogone .. a holothurian
Bentholyonsia .. a bivalve
Benthopanope .. a hairy crab
Benthopecten .. a seastar
Benthosema .. a lanternfish
Benthosphaera .. an isopod
Benthothuria .. a holothurian
Benthovoluta .. a vase shell
Berardius .. a beaked whale
Bernadinium .. a dinoflagellate
Berthelinia .. a bivalved sacoglossan
Berthella .. a side-gill slug
Berthellina .. a side-gill slug
Beryx .. an alfonsino
Bestiolina .. a calanoid copepod
Betaeus .. a snapping shrimp
Betaphycus .. a red alga
Bhanotia .. a pipefish
Bhawania .. a polychaete worm
Biancolina .. an amphipod
Biapertura .. a water flea
Biarctus .. a shovel-nosed or slipper lobster
Bicellaria .. a bryozoan
Bicellariella .. a bryozoan
Bicrisia .. a bryozoan
Bidiastopora .. a bryozoan
Bidyanus .. a grunter
Biemna .. a sponge
Bientalophora .. a bryozoan
Biffarius .. a ghost shrimp or marine yabby
Biflustra .. a bryozoan
Bigelowina .. a mantis shrimp
Billibathynella .. a syncarid
Binda .. a creeper
Biplex .. a triton
Bipora .. a bryozoan
Biprostatus .. a blood worm
Bircenna .. an amphipod
Biremia .. an isopod
Birgus .. a land hermit crab
Birubius .. an amphipod
Bispira .. a fan worm
Bitectipora .. a bryozoan
Bittium .. a creeper
Blachea .. a conger eel
Blastomussa .. a stony coral
Blastophysa .. a green alga
Bleekeria .. a sandlance
Blenniella .. a blenny
Blennodesmus .. an eel blenny
Blepharocysta .. a dinoflagellate
Blidingia .. a green alga
Boccardia .. a polychaete worm
Boccardiella .. a polychaete worm
Bodianus .. a wrasse
Bodotria .. a cumacean
Boergesenia .. a green alga
Bogabdella .. a leech
Bogidomma .. an amphipod
Bohadschia .. a holothurian
Bolbometopon .. a parrotfish
Boleophthalmus .. a goby
Bolinichthys .. a lanternfish
Bolitaena .. an octopod
Bollonaster .. a seastar
Bolma .. a turban shell
Bolocera .. a sea anemone
Bolttsia .. an amphipod
Bonapartia .. a bristlemouth
Bonellitia .. a nutmeg shell
Boninastrea .. a stony coral
Bonnemaisonia .. a red alga
Boodlea .. a green alga
Boodleopsis .. a green alga
Booneostrea .. an oyster
Booralana .. a sea louse
Booranus .. an amphipod
Bopyrina .. a parasitic isopod
Bopyroides .. a parasitic isopod
Boreomysis .. a mysid
Bornetella .. a green alga
Bornetia .. a red alga
Borniola .. a bivalve
Borostomias .. a snaggletooth
Bosmina .. a water flea
Bosminopsis .. a water flea
Bostockia .. a temperate bass
Bostrychia .. a red alga
Bostrychopora .. a bryozoan
Bostrychus .. a gudgeon
Botelloides .. a top shell
Bothriaster .. a seastar
Bothrioneurum .. a blood worm
Bothus .. a lefteye flounder
Botryllocarpa .. an ascidian (sea squirt)
Botrylloides .. an ascidian (sea squirt)
Botryllus .. an ascidian (sea squirt)
Botryocladia .. a red alga
Botrytella .. a brown alga
Botula .. a mussel
Bouchetriphora .. creepers
Bougainvillia .. a hydroid
Bougisia .. a hyperid amphipod
Bountiana .. a crab
Bourneotrochus .. a stony coral
Bouvieraxius .. a slow prawn
Bovichtus .. a thornfish
Bovitrigla .. a searobin
Braarudosphaera .. a coccolothophorid
Bracebridgia .. a bryozoan
Brachaelurus .. a blind shark
Brachaluteres .. a leatherjacket
Brachidontes .. a mussel
Brachina .. an amphipod
Brachionichthys .. a handfish
Brachiopsilus .. a handfish
Brachioteuthis .. an armed squid
Brachirus .. a sole
Brachynectes .. a triplefin
Brachynotus .. a shore crab
Brachypleura .. a largescale flounder
Brachypterois .. a lionfish
Brachyscelus .. a hyperid amphipod
Brachysomophis .. a snake eel
Bradiella .. a polychaete worm
Brama .. a pomfret
Branchellion .. a fish leech
Branchinella .. a fairy shrimp
Branchiomma .. a fan worm
Branchiostegus .. a tilefish
Branchiostoma .. a lancelet
Branchiosyllis .. a polychaete worm
Branchiura .. a blood worm
Brania .. a polychaete worm
Brechites .. a watering pot shell
Bregmaceros .. a codlet
Bregmotypta .. an isopod
Bresedium .. a rock crab
Bresilia .. a carid shrimp
Brettiopsis .. a bryozoan
Breviatria .. a blood worm
Brevibrachium .. a polychaete worm
Brevicollus .. an ascidian (sea squirt)
Brevifrons .. a copepod
Brevisomabathynella .. a syncarid
Breynia .. a heart urchin
Brifacia .. a fan worm
Brissopsis .. a heart urchin
Brissus .. a heart urchin
Brolgus .. an amphipod
Brongniartella .. a red alga
Brooksia .. a salp
Brosmolus .. a live-bearing cusk
Brosmophyciops .. a live-bearing cusk
Brotia .. a gastropod
Brotula .. a cuskeel
Brotulotaenia .. a cuskeel
Bruceonia .. a carid shrimp
Brucerolis .. an isopod
Bruguiera .. a mangrove
Brusinia .. a swimming crab
Bruzelia .. an amphipod
Bryaninops .. a goby
Bryocladia .. a red alga
Bryopsis .. a green alga
Bryorachis .. a bryozoan
Bubaris .. a sponge
Buccinulum .. a whelk
Buffonellaria .. a bryozoan
Buffonellodes .. a bryozoan
Bufonaria .. a frog shell
Bugula .. a bryozoan
Bugularia .. a bryozoan
Bugulella .. a bryozoan
Bugulopsis .. a bryozoan
Bulaceros .. a flatworm
Bulbonaricus .. a pipefish
Bulbus .. a sand snail
Bulla .. a bubble shell
Bullia .. a whelk
Bullina .. a bubble shell
Bullowanthura .. an isopod
Bulweria .. a petrel or shearwater
Bumeralius .. an amphipod
Bunaka .. a gudgeon
Bunaster .. a seastar
Bursa .. a frog shell
Bursatella .. a sea hare
Burtonispongia .. a sponge
Buskia .. a bryozoan
Busquilla .. a mantis shrimp
Butis .. a gudgeon
Butorides .. a heron or egret
Byblis .. an amphipod
Bythaelurus .. a catshark
Bythiolophus .. a seastar
Bythiopagurus .. a hermit crab
Caberea .. a bryozoan
Cabestana .. a triton
Cabillus .. a goby
Cabirops .. a parasitic isopod
Cacochalina .. a sponge
Cacospongia .. a sponge
Cacozeliana .. a creeper
Cadella .. a clam
Cadlina .. a nudibranch
Caducifer .. a whelk
Cadulus .. a tusk shell
Caecognathia .. an isopod
Caecopilumnus .. a hairy crab
Caecoserolis .. an isopod
Caenagnesia .. an ascidian (sea squirt)
Caenestheria .. a clam shrimp
Caenestheriella .. a clam shrimp
Caenopedina .. a sea urchin
Caepidium .. a brown alga
Caesio .. a fusilier
Caesioperca .. a rockcod
Caesioscorpis .. a rockcod
Cairnsichthys .. a rainbowfish
Calamocrinus .. a stalked crinoid
Calamorhynchus .. a hyperid amphipod
Calamphora .. a hydroid
Calanoides .. a calenoid copepod
Calanopia .. a calanoid copepod
Calanus .. a calenoid copepod
Calappa .. a box crab
Calastacus .. a slow prawn
Calaxius .. a slow prawn
Calcidiscus .. a coccolothophorid
Calcinus .. a hermit crab
Calciopappus .. a coccolothophorid
Calciosolenia .. a coccolothophorid
Calcipila .. an isopod
Calcisabella .. a fan worm
Caldukia .. a nudibranch
Caleschara .. a bryozoan
Califanthura .. an isopod
Caligus .. a parasitic copepod
Callanthias .. a rockcod
Callechelys .. a snake eel
Callianassa .. a ghost shrimp or marine yabby
Calliaster .. a seastar
Calliax .. a ghost shrimp or marine yabby
Calliderma .. a seastar
Calliodentalium .. a tusk shell
Callioplana .. a flatworm
Calliostoma .. a top shell
Calliotrochus .. a top shell
Callipallene .. a pycnogonid
Callipsygma .. a green alga
Callista .. a venus shell
Callithamnion .. a red alga
Calliurichthys .. a dragonet
Callocardia .. a venus shell
Callogobius .. a goby
Callogorgia .. an octocoral
Callophycus .. a red alga
Callophyllis .. a red alga
Calloplesiops .. a prettyfin
Calloporina .. a bryozoan
Callorhinchus .. an elephantfish
Callozostron .. an octocoral
Callucina .. a cockle
Callyspongia .. a sponge
Calmania .. a hairy crab
Calocalanus .. a calanoid copepod
Caloglossa .. a red alga
Calonectris .. a petrel or shearwater
Calotomus .. a parrotfish
Calpensia .. a bryozoan
Calpidium .. a bryozoan
Calpurnus .. an allied cowrie
Calthalotia .. a top shell
Calumia .. a gudgeon
Calvactaea .. a black-fingered crab
Calveriosoma .. a sea urchin
Calvetia .. a bryozoan
Calwellia .. a bryozoan
Calyptotheca .. a bryozoan
Calyptraea .. a slipper limpet
Calyptrolithina .. a coccolothophorid
Calyptrolithophora .. a coccolothophorid
Calyptrophora .. an octocoral
Calyptrosphaera .. a coccolothophorid
Calyx .. a sponge
Camatopsis .. a crab
Camontagnea .. a red alga
Campages .. a brachiopod
Campanile .. a lighthouse shell
Campanularia .. a hydroid
Campichthys .. a pipefish
Camposcia .. a spider crab
Camptocercus .. a water flea
Camptoplax .. a hairy crab
Camptoplites .. a bryozoan
Camptostemon .. an angiosperm (kapok family)
Campylaspis .. a cumacean
Campyloneis .. a diatom
Campylonotus .. a carid shrimp
Cancellaria .. a nutmeg shell
Cancellothyris .. a brachiopod
Cancellus .. a hermit crab
Cancilla .. a mitre shell
Cancrion .. a parasitic isopod
Canda .. a bryozoan
Candacia .. a calanoid copepod
Candelabrum .. a hydroid
Candidaspongia .. a sponge
Candonopsis .. an ostracod
Cantellius .. a coral barnacle
Cantharellus .. a stony coral
Cantharidella .. a top shell
Cantharidus .. a top shell
Cantharus .. a whelk
Cantherhines .. a leatherjacket
Cantheschenia .. a leatherjacket
Canthidermis .. a triggerfish
Canthigaster .. a toadfish
Canthocalanus .. a calenoid copepod
Caperea .. a right whale
Caphyra .. a swimming crab
Capillaster .. a crinoid
Capitulatinoe .. a scale worm
Capnella .. a soft coral
Caprella .. a caprellid amphipod
Caprellina .. a caprellid amphipod
Caprellinoides .. a caprellid amphipod
Capreolia .. a red alga
Caprichthys .. a boxfish
Caprodon .. a rockcod
Capropygia .. a boxfish
Capsosiphon .. a green alga
Capulus .. a cap limpet
Caracanthus .. a croucher
Caragobius .. a goby
Carangoides .. a trevally
Caranx .. a trevally
Carapus .. a pearlfish
Carassius .. a carp
Carazziella .. a polychaete worm
Carbasea .. a bryozoan
Carcharhinus .. a whaler shark
Carcharias .. a grey nurse shark
Carcharodon .. a mackerel shark
Carcinonemertes .. a ribbon worm
Carcinoplax .. a goneplacid crab
Carcinus .. a swimming crab
Cardiocardita .. a cockle
Cardiolucina .. a cockle
Cardiomya .. a bivalve
Cardisoma .. a crab
Cardita .. a cockle
Carditella .. a cockle
Careproctus .. a snailfish
Caretta .. a sea turtle
Carettochelys .. a pignose turtle
Caridina .. a shrimp
Caridinides .. a shrimp
Carijoa .. an octocoral
Carinaria .. a pelagic gastropod
Carinina .. a ribbon worm
Carinoma .. a ribbon worm
Carinopontonia .. a carid shrimp
Carinosquilla .. a mantis shrimp
Caristius .. a manefish
Carpilius .. a crab
Carpoglossum .. a brown alga
Carpomitra .. a brown alga
Carpopeltis .. a red alga
Carpophyllum .. a brown alga
Carpothamnion .. a red alga
Carteriospongia .. a sponge
Cartetolana .. a sea louse
Carukia .. a box jellyfish
Carupa .. a swimming crab
Carybdea .. a box jellyfish
Caryophyllia .. a stony coral
Casmaria .. a helmet shell
Cassidias .. an isopod
Cassidinella .. an isopod
Cassidinidea .. an isopod
Cassidinopsis .. an isopod
Cassidula .. an air-breathing snail
Cassis .. a helmet shell
Castleichthys .. a conger eel
Castrabdella .. a leech
Catadysis .. a bryozoan
Cataetyx .. a live-bearing cusk
Catalaphyllia .. a stony coral
Catapaguropsis .. a hermit crab
Catapagurus .. a hermit crab
Cateios .. a pebble crab
Catenella .. a red alga
Catenellopsis .. a red alga
Catenicella .. a bryozoan
Catenicellopsis .. a bryozoan
Catharacta .. a gull, skua, noddy or tern
Catillopecten .. a deepwater scallop
Catoessa .. an isopod
Catomerus .. a barnacle
Catoptrus .. a swimming crab
Catostylus .. a jellyfish
Caudoeuraphia .. a barnacle
Caulacanthus .. a red alga
Caulastrea .. a stony coral
Caulerpa .. a green alga
Caulibugula .. a bryozoan
Caulleriella .. a polychaete worm
Caulocystis .. a brown alga
Caulophacus .. a glass sponge
Caulophryne .. a fanfin anglerfish
Caulospongia .. a sponge
Cavochalina .. a sponge
Caymanostella .. a seastar
Ceina .. an amphipod
Celerina .. a seastar
Cellana .. a limpet
Cellaria .. a bryozoan
Cellarinella .. a bryozoan
Cellarinelloides .. a bryozoan
Celleporaria .. a bryozoan
Celleporella .. a bryozoan
Celleporina .. a bryozoan
Cenacrum .. a red alga
Cenolia .. a crinoid
Cenometra .. a crinoid
Centrapala .. a freshwater snail
Centriscops .. a bellowsfish
Centriscus .. a razorfish
Centroberyx .. an alfonsino
Centrobranchus .. a lanternfish
Centroceras .. a red alga
Centrodraco .. a deepsea dragonet
Centrogenys .. a rockcod
Centrolophus .. a trevalla
Centropages .. a calanoid copepod
Centrophorus .. a gulper shark
Centropogon .. a fortesque
Centropyge .. an angelfish
Centroscyllium .. a lantern shark
Centroscymnus .. a sleeper shark
Centroselachus .. a sleeper shark
Centrostephanus .. a sea urchin
Cephalodiscus .. a pterobranch
Cephalopholis .. a rockcod
Cephalophoxoides .. an amphipod
Cephalopsetta .. a sand flounder
Cephaloscyllium .. a catshark
Cephalotrichella .. a ribbon worm
Cepola .. a bandfish
Ceradocopsis .. an amphipod
Ceradocus .. an amphipod
Ceramaster .. a seastar
Ceramium .. a red alga
Cerapus .. an amphipod
Cerataulina .. a diatom
Ceratias .. a seadevil
Ceratium .. a dinoflagellate
Ceratobregma .. a triplefin
Ceratocarcinus .. a hairy crab
Ceratocephale .. a polychaete worm
Ceratocephalus .. an isopod
Ceratocorys .. a dinoflagellate
Ceratodictyon .. a red alga
Ceratolithus .. a coccolothophorid
Ceratonereis .. a polychaete worm
Ceratoplax .. a hairy crab
Ceratopsion .. a sponge
Ceratoscopelus .. a lanternfish
Ceratosoma .. a nudibranch
Ceratothoa .. an isopod
Cerberilla .. a nudibranch
Cercamia .. a cardinalfish
Cerceis .. an isopod
Cercidochela .. a sponge
Cercodemas .. a holothurian
Cercosphaera .. an isopod
Cerebratulus .. a ribbon worm
Cereopsis .. a duck, goose or swan
Ceriodaphnia .. a water flea
Ceriops .. a mangrove
Cerithidea .. a mud creeper
Cerithiopsilla .. a creeper
Cerithium .. a creeper
Cestoplana .. a flatworm
Cestum .. a ctenophore
Ceto .. a holothurian
Cetoconcha .. a bivalve
Cetonurichthys .. a whiptail
Cetonurus .. a whiptail
Cetopirus .. a barnacle
Cetorhinus .. a basking shark
Cetoscarus .. a parrotfish
Chaceon .. a crab
Chaenodraco .. a crocodile icefish
Chaenophryne .. a dreamer
Chaetarcturus .. an isopod
Chaetaster .. a seastar
Chaetilia .. an isopod
Chaetoceros .. a diatom
Chaetoderma .. a chaetoderm aplacophoran
Chaetodermis .. a leatherjacket
Chaetodiadema .. a sea urchin
Chaetodon .. a butterflyfish
Chaetodontoplus .. an angelfish
Chaetolepas .. a stalked barnacle
Chaetomorpha .. a green alga
Chaetopterus .. a polychaete worm
Chaetozone .. a polychaete worm
Chalaronema .. a glass sponge
Chalina .. a sponge
Chalinodendron .. a sponge
Chalinopora .. a sponge
Chalinopsilla .. a sponge
Chalinorhaphis .. a sponge
Chama .. a chama
Chamaebotrys .. a red alga
Chamaesipho .. a barnacle
Champia .. a red alga
Champiocolax .. a red alga
Champsocephalus .. a crocodile icefish
Champsodon .. a gaper
Champsodon .. a gaper
Channa .. a snakehead
Channichthys .. a crocodile icefish
Chanos .. a milkfish
Chaperia .. a bryozoan
Chaperiopsis .. a bryozoan
Characella .. a sponge
Characodoma .. a bryozoan
Charisma .. a top shell
Charitometra .. a crinoid
Charonia .. a triton
Charybdis .. a swimming crab
Chascanopsetta .. a lefteye flounder
Chauliodus .. a viperfish
Chaunacops .. a coffinfish
Chaunax .. a coffinfish
Chauviniella .. a red alga
Chavania .. a cockle
Cheilea .. a slipper limpet
Cheilinus .. a wrasse
Cheilio .. a wrasse
Cheilodactylus .. a morwong
Cheilodipterus .. a cardinalfish
Cheilonereis .. a polychaete worm
Cheilopallene .. a pycnogonid
Cheilopogon .. a flyingfish
Cheiloporina .. a bryozoan
Cheiloprion .. a damselfish
Cheilosporum .. a red alga
Cheiraster .. a seastar
Cheirimedon .. an amphipod
Cheiriphotis .. an amphipod
Cheirocratus .. an amphipod
Cheirodonta .. creepers
Chelantermedia .. an isopod
Chelanthura .. an isopod
Chelicopia .. an ostracod
Chelidonichthys .. a searobin
Chelidonura .. a sea slug
Chelidoperca .. a rockcod
Chelidozoum .. a bryozoan
Chelmon .. a butterflyfish
Chelmonops .. a butterflyfish
Chelonaplysilla .. a sponge
Chelonia .. a sea turtle
Chelonibia .. a barnacle
Chelonodon .. a toadfish
Chelophyes .. a siphonophore
Chelorchestia .. an amphipod
Chelura .. an amphipod
Cheramus .. a ghost shrimp or marine yabby
Cherax .. a freshwater crayfish or yabby
Chernocaris .. a carid shrimp
Cheroscorpaena .. a waspfish
Chevalia .. an amphipod
Chevallieria .. a gastropod
Chiasmodon .. a swallower
Chicomurex .. a gastropod
Chicoreus .. a gastropod
Chilibathynella .. a syncarid
Chillagoe .. an amphipod
Chilomycterus .. a porcupinefish
Chiloscyllium .. a longtail carpet shark
Chimaera .. a shortnose chimaera
Chionis .. a sheathbill
Chionobathyscus .. a crocodile icefish
Chionoecetes .. a spider crab
Chiridota .. a holothurian
Chirocentrus .. a wolf herring
Chirodectes .. a box jellyfish
Chiromantes .. a rock crab
Chironemus .. a kelpfish
Chironephthya .. an octocoral
Chironex .. a box jellyfish
Chiropsella .. a box jellyfish
Chiropsoides .. a box jellyfish
Chirostylus .. a squat lobster
Chiroteuthis .. a squid
Chitala .. a featherback
Chiton .. a chiton
Chitonopsis .. an isopod
Chlamydogobius .. a goby
Chlamydoselachus .. a frill shark
Chlamys .. a scallop
Chlanidophora .. a brown alga
Chlanidota .. a whelk
Chlidonia .. a bryozoan
Chlidonias .. a gull, skua, noddy or tern
Chloeia .. a polychaete worm
Chlorocladus .. a green alga
Chlorocurtis .. a pandalid shrimp
Chlorodesmis .. a green alga
Chlorodiella .. a black-fingered crab
Chlorodiloma .. a top shell
Chlorophthalmus .. a greeneye
Chlorotocella .. a pandalid shrimp
Chlorotocus .. a pandalid shrimp
Chlorurus .. a parrotfish
Chnoospora .. a brown alga
Choerodon .. a wrasse
Choeroichthys .. a pipefish
Chondracanthus .. a red alga
Chondria .. a red alga
Chondrilla .. a sponge
Chondriovelum .. a bryozoan
Chondrocidaris .. a sea urchin
Chondrocladia .. a sponge
Chondrophycus .. a red alga
Chondropsis .. a sponge
Chondrosia .. a sponge
Chone .. a fan worm
Chonelasma .. a glass sponge
Choniocardia .. a cockle
Choniognathus .. a spider crab
Chordaria .. a brown alga
Chordariopsis .. a brown alga
Choreonema .. a red alga
Choriaster .. a seastar
Choriplax .. a chiton
Chorismus .. a hump-backed shrimp
Chorisquilla .. a mantis shrimp
Choristella .. a gastropod
Chorizocarpa .. an ascidian (sea squirt)
Chorizopora .. a bryozoan
Chrionema .. a duckbill
Chroestia .. an amphipod
Chromis .. a damselfish
Chromodoris .. a nudibranch
Chroodactylon .. a red alga
Chrysaora .. a jellyfish
Chrysiptera .. a damselfish
Chrysochir .. a jewfish
Chrysogorgia .. a gold coral
Chrysopetalum .. a polychaete worm
Chrysostoma .. a top shell
Chrysymenia .. a red alga
Chthamalus .. a barnacle
Chtonobdella .. a leech
Chucullba .. an amphipod
Chuneola .. a hyperid amphipod
Chydaekata .. an amphipod
Chydorus .. a water flea
Chylocladia .. a red alga
Ciboticola .. a mussel
Cicatellia .. a bivalve
Cichlasoma .. a cichlid
Ciclopecten .. a scallop
Cigclisula .. a bryozoan
Cilicaea .. an isopod
Cilicaeopsis .. an isopod
Ciliopagurus .. a hermit crab
Cilunculus .. a pycnogonid
Cinachyra .. a sponge
Cinachyrella .. a sponge
Cinetodus .. a forktail catfish
Cinetorhynchus .. a hinge-back shrimp
Cinnalepeta .. a sugar limpet
Ciocalypta .. a sponge
Ciona .. an ascidian (sea squirt)
Circe .. a venus shell
Circomphalus .. a venus shell
Circumstella .. a turban shell
Cirolana .. a sea louse
Cirratulus .. a polychaete worm
Cirrhigaleus .. a gulper shark
Cirrhilabrus .. a wrasse
Cirrhimuraena .. a snake eel
Cirrhipathes .. a black coral
Cirrhitichthys .. a hawkfish
Cirrhitus .. a hawkfish
Cirriformia .. a polychaete worm
Cirripectes .. a blenny
Cirrulicarpus .. a red alga
Cirsonella .. a gastropod
Cirsotrema .. a wentletrap
Cistina .. a seastar
Citharoides .. a largescale flounder
Cladangia .. a stony coral
Cladaster .. a seastar
Cladhymenia .. a red alga
Cladocoryne .. a hydroid
Cladocroce .. a sponge
Cladolabes .. a holothurian
Cladophora .. a green alga
Cladophoropsis .. a green alga
Cladopsammia .. a stony coral
Cladosiphon .. a brown alga
Cladostephus .. a brown alga
Cladothele .. a brown alga
Cladothenea .. a sponge
Clanculus .. a top shell
Clarias .. a snake catfish
Clarkcoma .. a brittlestar
Clarkcomanthus .. a crinoid
Clathria .. a sponge
Clathrina .. a calcareous sponge
Clathriodendron .. a sponge
Clathropsis .. a creeper
Clathrotellina .. a clam
Claudenus .. an ascidian (sea squirt)
Clausocalanus .. a calenoid copepod
Clavagella .. a watering pot shell
Clavelina .. an ascidian (sea squirt)
Claviclonium .. a red alga
Claviderma .. a chaetoderm aplacophoran
Claviporella .. a bryozoan
Clavopora .. a bryozoan
Clavularia .. an octocoral
Clavus .. a gastropod
Cleantioides .. an isopod
Cleantis .. an isopod
Cleidopus .. a pineapplefish
Cleidothaerus .. a rock shell
Cleistostoma .. a crab
Clementia .. a venus shell
Cleotrivia .. a bean cowrie
Clibanarius .. a hermit crab
Cliftonaea .. a red alga
Climacodium .. a diatom
Cliona .. a boring sponge
Cliothosa .. a boring sponge
Clistocoeloma .. a rock crab
Clitella .. an ascidian (sea squirt)
Clithon .. a nerite
Cloeosiphon .. a sipunculan worm
Clorida .. a mantis shrimp
Cloridina .. a mantis shrimp
Cloridopsis .. a mantis shrimp
Clupea .. a herring
Clypeaster .. a sand dollar
Clypeomorus .. a creeper
Clytemnestra .. a harpacticoid copepod
Clytia .. a hydroid
Cnemidaster .. a seastar
Cnemidocarpa .. an ascidian (sea squirt)
Cnidoglanis .. an eeltail catfish
Coccolithus .. a coccolothophorid
Coccopigya .. a cap limpet
Coccorella .. a sabretooth fish
Cochleoceps .. a clingfish
Cochlespira .. a gastropod
Cociella .. a flathead
Cocotropus .. a velvetfish
Codakia .. a cockle
Codiophyllum .. a red alga
Codium .. a green alga
Coelarthrum .. a red alga
Coelocarteria .. a sponge
Coeloclonium .. a red alga
Coelophrys .. a seabat
Coeloplana .. a benthic ctenophore
Coelopleurus .. a sea urchin
Coelorinchus .. a whiptail
Coeloseris .. a stony coral
Coelosphaera .. a sponge
Coelothrix .. a red alga
Coenobita .. a land hermit crab
Colacanthotelson .. a phreatic isopod
Coleusia .. a pebble crab
Colina .. a creeper
Colistium .. a righteye flounder
Collettea .. a tanaidacean
Collospongia .. a sponge
Colobometra .. a crinoid
Colochirus .. a holothurian
Coloconger .. a conger eel
Coloconger .. a short-tail conger eel
Colomastix .. an amphipod
Colossendeis .. a pycnogonid
Colpodaspis .. a bubble shell
Colpomenia .. a brown alga
Colpospira .. a screw shell
Colubotelson .. a phreatic isopod
Colubraria .. a whelk
Columbarium .. a vase shell
Columnella .. a bryozoan
Colurodontis .. a leatherjacket
Coluzea .. a vase shell
Comanthus .. a crinoid
Comaster .. a crinoid
Comatella .. a crinoid
Comatula .. a crinoid
Comatulella .. a crinoid
Cominella .. a whelk
Comissia .. a crinoid
Comitas .. a gastropod
Complicachlamys .. a scallop
Compoceration .. an isopod
Compressidens .. a tusk shell
Compsopogon .. a red alga
Compsothyris .. a brachiopod
Conchoderma .. a goose barnacle
Conchodytes .. a carid shrimp
Conchoecetes .. a sponge crab
Conciliopsis .. a creeper
Condominium .. an ascidian (sea squirt)
Condukius .. an amphipod
Condylocardia .. a bivalve
Condylocuna .. a bivalve
Conescharellina .. a bryozoan
Confluphyllia .. a stony coral
Conger .. a conger eel
Congiopodus .. a pigfish
Congrogadus .. an eel blenny
Conicostoma .. an amphipod
Conidens .. a clingfish
Conniella .. a wrasse
Conocara .. a slickhead
Conocladus .. a basketstar
Conocyathus .. a stony coral
Conopea .. a barnacle
Conopeum .. a bryozoan
Conotalopia .. a top shell
Conotrochus .. a stony coral
Contusus .. a toadfish
Conus .. a cone shell
Cookeolus .. a bigeye
Copidozoum .. a bryozoan
Copilia .. a cyclopoid copepod
Coppingeria .. a polychaete worm
Coradion .. a butterflyfish
Coralanthura .. an isopod
Coralichlamys .. a scallop
Corallana .. an isopod
Corallianassa .. a ghost shrimp or marine yabby
Corallina .. a red alga
Coralliocaris .. a carid shrimp
Coralliodrilus .. a blood worm
Coralliophaga .. a bivalve
Corallistes .. a sponge
Corallophila .. a red alga
Corbicula .. a freshwater cockle
Corbula .. a cockle
Corbulella .. a bryozoan
Corbulipora .. a bryozoan
Corculum .. a heart cockle
Cordylecladia .. a red alga
Corella .. an ascidian (sea squirt)
Corethron .. a diatom
Coriophyllum .. a red alga
Coris .. a wrasse
Corisphaera .. a coccolothophorid
Cornisepta .. a keyhole limpet
Cornucopina .. a bryozoan
Cornuticella .. a bryozoan
Cornuticellina .. a bryozoan
Coronaster .. a seastar
Coronidopsis .. a mantis shrimp
Coronosphaera .. a coccolothophorid
Coronula .. a barnacle
Corophium .. an amphipod
Corticium .. a sponge
Corycaeus .. a cyclopoid copepod
Corydendrium .. a hydroid
Corymorpha .. a hydroid
Corynactis .. a jewel or corallimorph anemone
Corynomorpha .. a red alga
Corynophlaea .. a brown alga
Coryphaena .. a dolphinfish
Coryphaenoides .. a whiptail
Corystolona .. a hydroid
Corythoichthys .. a pipefish
Cosa .. a bivalve
Coscinaraea .. a stony coral
Coscinasterias .. a seastar
Cosciniopsis .. a bryozoan
Coscinoderma .. a sponge
Coscinodiscus .. a diatom
Cosmasterias .. a seastar
Cosmetalepas .. a keyhole limpet
Cosmiometra .. a crinoid
Cosmocalanus .. a calenoid copepod
Cosmocampus .. a pipefish
Cosmonotus .. a spanner crab
Costasiella .. a sea slug
Costaticella .. a bryozoan
Costifer .. a sponge
Cottapistus .. a fortesque
Cottoniella .. a red alga
Coxiella .. a salt lake snail
Coxischyrocerus .. an amphipod
Crabyzos .. an isopod
Cranchia .. a bathyscaphoid squid
Craniella .. a sponge
Cranocephalus .. a hyperid amphipod
Cranopsis .. a keyhole limpet
Cranosina .. a bryozoan
Crapatalus .. a sandfish
Craspedocarpus .. a red alga
Craspedochiton .. a chiton
Craspidaster .. a seastar
Crassacuna .. a bivalve
Crassatina .. a cockle
Crassicantharus .. a whelk
Crassicorophium .. an amphipod
Crassimarginatella .. a bryozoan
Crassispira .. a gastropod
Crassitoniella .. a gastropod
Crassostrea .. an oyster
Cratena .. a nudibranch
Craterocephalus .. a hardyhead
Cratis .. a bivalve
Creedia .. a sand burrower
Crella .. a sponge
Crellina .. a sponge
Crenarctus .. a shovel-nosed or slipper lobster
Crenatula .. a false pearl oyster
Crenimugil .. a mullet
Creniola .. an isopod
Crenisopus .. a phreatic isopod
Crenoicus .. a phreatic isopod
Creocele .. a clingfish
Crepidacantha .. a bryozoan
Crepidula .. a slipper limpet
Crepis .. a bryozoan
Creusia .. a coral barnacle
Cribellopora .. a bryozoan
Cribralaria .. a bryozoan
Cribricellina .. a bryozoan
Cribrochalina .. a sponge
Cricophorus .. a sea anemone
Criocarcinus .. a spider crab
Crisia .. a bryozoan
Crispatotrochus .. a stony coral
Cristatogobius .. a goby
Cristiceps .. a weedfish
Crocodylus .. a crocodile
Cromileptes .. a rockcod
Crosnieriella .. a stalked barnacle
Crossaster .. a seastar
Crossorhombus .. a lefteye flounder
Crossosalarias .. a blenny
Crossotonotus .. a crab
Crotalometra .. a crinoid
Crouania .. a red alga
Crucescharellina .. a bryozoan
Crucigera .. a tube worm
Cruoriella .. a red alga
Cruranthura .. an isopod
Crybelonemertes .. a ribbon worm
Cryobdella .. a fish leech
Cryodraco .. a crocodile icefish
Cryosignum .. an isopod
Cryptassiminea .. a gastropod
Cryptasterina .. a seastar
Cryptocentroides .. a goby
Cryptocentrus .. a goby
Cryptochirus .. a gall crab
Cryptocnemus .. a pebble crab
Cryptocoeloma .. a hairy crab
Cryptodromia .. a sponge crab
Cryptodromiopsis .. a sponge crab
Cryptolutea .. a hairy crab
Cryptomya .. a bivalve
Cryptonemia .. a red alga
Cryptopecten .. a scallop
Cryptopelta .. a brittlestar
Cryptopenaeus .. a penaeid prawn
Cryptophialus .. a barnacle
Cryptopilumnus .. a hairy crab
Cryptoplax .. a chiton
Cryptopodia .. a crabs
Cryptopolyzoon .. a bryozoan
Cryptopora .. a brachiopod
Cryptopsaras .. a seadevil
Cryptosula .. a bryozoan
Ctena .. a cockle
Ctenactis .. a stony coral
Ctenocalanus .. a calenoid copepod
Ctenocardia .. a heart cockle
Ctenocella .. an octocoral
Ctenochaetus .. a surgeonfish
Ctenocheles .. a mud shrimp
Ctenocidaris .. a sea urchin
Ctenodiscus .. a seastar
Ctenogobiops .. a goby
Ctenoides .. a file clam
Ctenopleura .. a seastar
Ctenopteryx .. a comb-finned squid
Ctenotrypauchen .. a goby
Ctenyura .. an ascidian (sea squirt)
Cterissa .. an isopod
Cubiceps .. a driftfish
Cucullaea .. a false ark shell
Cucullipora .. a bryozoan
Cucumaria .. a holothurian
Cucumerunio .. a freshwater mussel
Cucurbitula .. a flask cockle
Cucuvitrum .. a holothurian
Cuenotaster .. a seastar
Culcita .. a seastar
Culeolus .. an ascidian (sea squirt)
Culicia .. a stony coral
Cultellus .. a razor clam
Cumella .. a cumacean
Cumellopsis .. a cumacean
Cuna .. a bivalve
Cunanax .. a bivalve
Cunmurra .. an amphipod
Cupidoliva .. an olive shell
Cupuladria .. a bryozoan
Curdiea .. a red alga
Curidia .. an amphipod
Curvemysella .. a bivalve
Curveulima .. an eulima
Cuspidaria .. a bivalve
Cutleria .. a brown alga
Cyamiomactra .. a bivalve
Cyamon .. a sponge
Cyamus .. a whale louse
Cyanea .. a jellyfish
Cyathelia .. a stony coral
Cyathotrochus .. a stony coral
Cyathura .. an isopod
Cybiosarda .. a mackerel
Cycethra .. a seastar
Cycetopagurus .. a hermit crab
Cycladicama .. a bivalve
Cyclaspis .. a cumacean
Cyclax .. a spider crab
Cyclestheria .. a clam shrimp
Cyclichthys .. a porcupinefish
Cyclicopora .. a bryozoan
Cyclocardia .. a cockle
Cyclochlamys .. a deepwater scallop
Cyclocoeloma .. a spider crab
Cyclodius .. a black-fingered crab
Cyclograpsus .. a shore crab
Cyclolithus .. a coccolothophorid
Cyclopecten .. a deepwater scallop
Cycloporus .. a flatworm
Cyclosalpa .. a salp
Cycloseris .. a stony coral
Cyclotellina .. a clam
Cyclotelson .. an amphipod
Cycloteuthis .. a disc-fin squid
Cyclothone .. a bristlemouth
Cyema .. a bobtail snipe eel
Cygnodraco .. an Antarctic dragonfish
Cygnus .. a duck, goose or swan
Cylichna .. a bubble shell
Cylichnatys .. a bubble shell
Cylindroleberis .. an ostracod
Cylindrospermopsis .. a blue-green alga (cyanobacterium)
Cylindryllioides .. an amphipod
Cyllene .. a whelk
Cyllopus .. a hyperid amphipod
Cymadusa .. an amphipod
Cymatium .. a triton
Cymbacephalus .. a flathead
Cymbacephalus .. a flathead
Cymbastela .. a sponge
Cymbicopia .. an ostracod
Cymbiola .. a volute
Cymbiolista .. a volute
Cymbovula .. an allied cowrie
Cymo .. a black-fingered crab
Cymodetta .. an isopod
Cymodoce .. an isopod
Cymodocea .. a seagrass
Cymodocella .. an isopod
Cymodopsis .. an isopod
Cymolutes .. a wrasse
Cymonomus .. a crab
Cymothoa .. an isopod
Cynarina .. a stony coral
Cynoglossus .. a tongue sole
Cynomacrurus .. a whiptail
Cynometra .. an angiosperm (pea family)
Cyphastrea .. a stony coral
Cypho .. a dottyback
Cyphocaris .. an amphipod
Cypraea .. a cowrie
Cypraecassis .. a helmet shell
Cypridinodes .. an ostracod
Cyprinocirrhites .. a hawkfish
Cyprinus .. a carp
Cyproidea .. an amphipod
Cypselurus .. a flyingfish
Cyrtechinus .. a sea urchin
Cyrtomaia .. a spider crab
Cyrtophium .. an amphipod
Cyrtosphaera .. a coccolothophorid
Cystisoma .. a hyperid amphipod
Cystoclonium .. a red alga
Cystodytes .. an ascidian (sea squirt)
Cystophora .. a brown alga
Cystoseira .. a brown alga
Cytheropteron .. an ostracod
Cyttomimus .. a dory
Cyttopsis .. a dory
Cyttus .. a lookdown dory
Cyzicus .. a clam shrimp
Dacodraco .. a crocodile icefish
Dacrydium .. a mussel
Dacryopilumnus .. a crab
Dactylamblyops .. a mysid
Dactylanthus .. a sea anemone
Dactylapta .. a holothurian
Dactylia .. a sponge
Dactylochalina .. a sponge
Dactylonia .. a carid shrimp
Dactylophora .. a morwong
Dactyloptena .. a flying gurnard
Dactylopus .. a dragonet
Dactylosaster .. a seastar
Dactylospongia .. a sponge
Dactylosurculus .. a live-bearing cusk
Dadaya .. a water flea
Dagnaudus .. a crab
Daidalometra .. a crinoid
Daira .. a crab
Dairella .. a hyperid amphipod
Dakariella .. a bryozoan
Daktylethra .. a coccolothophorid
Dalatias .. a sleeper shark
Daldorfia .. a crabs
Dalhousia .. a hydrobiid snail
Damiria .. a sponge
Danilia .. a top shell
Dannevigena .. a wentletrap
Dannevigia .. a cuskeel
Dantya .. an ostracod
Daphnella .. a gastropod
Daphnia .. a water flea
Daphniopsis .. a water flea
Daption .. a petrel or shearwater
Dardanus .. a hermit crab
Darwinella .. a sponge
Darwinula .. an ostracod
Dascyllus .. a damselfish
Dasella .. a carid shrimp
Dasmosmilia .. a stony coral
Dasya .. a red alga
Dasyatis .. a stingray
Dasybranchus .. a polychaete worm
Dasycaris .. a carid shrimp
Dasycladus .. a green alga
Dasyclonium .. a red alga
Dasyphila .. a red alga
Dasyphloea .. a red alga
Dasyptilon .. a red alga
Dasystenella .. an octocoral
Dasythamniella .. a red alga
Davila .. a surf clam
Davusia .. a crab
Dayus .. a cumacean
Deania .. a gulper shark
Decametra .. a crinoid
Decapterus .. a trevally
Decathelepus .. a polychaete worm
Decatopecten .. a scallop
Decodon .. a wrasse
Decolopoda .. a pycnogonid
Defrancia .. a bryozoan
Deima .. a holothurian
Delectopecten .. a scallop
Delesseria .. a red alga
Delibus .. a calanoid copepod
Delisea .. a red alga
Delkarlye .. an amphipod
Delphinus .. a dolphin
Deltocyathoides .. a stony coral
Deltocyathus .. a stony coral
Demania .. a black-fingered crab
Deminutiocandona .. an ostracod
Demonax .. a fan worm
Denariusa .. a glassfish
Dendoricella .. a sponge
Dendostrea .. an oyster
Dendrilla .. a sponge
Dendrochirus .. a lionfish
Dendrodoris .. a nudibranch
Dendronereides .. a polychaete worm
Dendroperistoma .. a bryozoan
Dendrophyllia .. a stony coral
Dendropoma .. a worm shell
Dendrotion .. an isopod
Dendya .. a calcareous sponge
Densipora .. a bryozoan
Dentalium .. a tusk shell
Dentarene .. a turban shell
Dentatherina .. a tusked silverside
Dentex .. a bream
Dentiraja .. a skate
Derbesia .. a green alga
Dercitus .. a sponge
Derichthys .. a longneck eel
Dermatias .. a dreamer
Dermatopsis .. a live-bearing cusk
Dermatopsoides .. a live-bearing cusk
Dermechinus .. a sea urchin
Dermochelys .. a leatherback turtle
Dermomurex .. a gastropod
Desdemona .. a fan worm
Desmacella .. a sponge
Desmacidon .. a sponge
Desmapsamma .. a sponge
Desmarestia .. a brown alga
Desmeplagioecia .. a bryozoan
Desmodema .. a ribbonfish
Desmodromia .. a sponge crab
Desmonema .. a jellyfish
Desmophyllum .. a stony coral
Deto .. a terrestrial isopod
Detonula .. a diatom
Deucalion .. a red alga
Devo .. an amphipod
Dexaminoculus .. an amphipod
Dexiospira .. a tube worm
Diabocilla .. a seastar
Diacanthurus .. a hermit crab
Diacarnus .. a sponge
Diacyclops .. a cyclopoid copepod
Diadema .. a sea urchin
Diademichthys .. a clingfish
Diagramma .. a grunter bream
Diala .. a gastropod
Diancistrus .. a live-bearing cusk
Diaperoecia .. a bryozoan
Diaphana .. a bubble shell
Diaphanosoma .. a water flea
Diaphoromactra .. a clam
Diaphus .. a lanternfish
Diapse .. a red alga
Diaseris .. a stony coral
Diasterope .. an ostracod
Diastobranchus .. a basketwork eel
Diastoma .. a diastoma
Diastopora .. a bryozoan
Diastylis .. a cumacean
Dibrachichthys .. a doublefin frogfish
Dibranchus .. a seabat
Dibunostoma .. a bryozoan
Diceratias .. a double anglerfish
Dichelaspis .. a barnacle
Dichotella .. an octocoral
Dichrometra .. a crinoid
Diclidocella .. an isopod
Dicoides .. a cumacean
Dicotylichthys .. a porcupinefish
Dicranema .. a red alga
Dicranodromia .. a crab
Dicrolene .. a cuskeel
Dictenophiura .. a brittlestar
Dictyochasma .. a bryozoan
Dictyocylindrus .. a sponge
Dictyodendrilla .. a sponge
Dictyomenia .. a red alga
Dictyonella .. a sponge
Dictyopteris .. a brown alga
Dictyosphaeria .. a green alga
Dictyosquilla .. a mantis shrimp
Dictyota .. a brown alga
Dictyothamnion .. a red alga
Dictyotopsis .. a brown alga
Dictyurus .. a red alga
Dicyathifer .. a ship worm
Didemnum .. an ascidian (sea squirt)
Didiscus .. a sponge
Didymosella .. a bryozoan
Didymothallus .. a live-bearing cusk
Didymozoum .. a bryozoan
Dieidolycus .. an eelpout
Digenea .. a red alga
Digidentis .. a nudibranch
Digononemertes .. a ribbon worm
Dilatatiocauda .. a copepod
Diloma .. a top shell
Dilophus .. a brown alga
Dimetopia .. a bryozoan
Diminovula .. an allied cowrie
Dimorphostylis .. a cumacean
Dimya .. a bivalve
Dinematichthys .. a live-bearing cusk
Dineta .. a leech
Dinolestes .. a longfin pike
Dinophysis .. a dinoflagellate
Diodon .. a porcupinefish
Diodora .. a keyhole limpet
Diogenes .. a hermit crab
Diogenichthys .. a lanternfish
Diomedea .. an albatross
Diopatra .. a polychaete worm
Diphasia .. a hydroid
Diplacanthopoma .. a live-bearing cusk
Diplasterias .. a seastar
Diploastrea .. a stony coral
Diploconger .. a conger eel
Diplodonta .. a bivalve
Diplogrammus .. a dragonet
Diploneis .. a diatom
Diplonotos .. a bryozoan
Diplophos .. a bristlemouth
Diplophryxus .. a parasitic isopod
Diploporella .. a bryozoan
Diploprion .. a soapfish
Diplopsalis .. a dinoflagellate
Diplosoma .. an ascidian (sea squirt)
Diplospinus .. a gemfish
Dipolydora .. a polychaete worm
Diproctacanthus .. a wrasse
Dipsacaster .. a seastar
Dipterosiphonia .. a red alga
Dipterygonotus .. a fusilier
Dipturus .. a skate
Dipulus .. a live-bearing cusk
Diretmichthys .. a spinyfin
Diretmus .. a spinyfin
Dirimus .. an amphipod
Disasterina .. a seastar
Dischides .. a tusk shell
Dischistodus .. a damselfish
Discias .. a carid shrimp
Discidina .. an isopod
Discina .. a brachiopod
Discodermia .. a sponge
Disconatis .. a scale worm
Discoplax .. a crab
Discordipinna .. a goby
Discosphaera .. a coccolothophorid
Discosporangium .. a brown alga
Discoteuthis .. a disc-fin squid
Discotrema .. a clingfish
Disparella .. an isopod
Dispio .. a polychaete worm
Disporella .. a bryozoan
Dissodinium .. a dinoflagellate
Dissostichus .. an icefish
Distaplia .. an ascidian (sea squirt)
Disteira .. a sea snake
Distichoptilum .. a seapen
Distorsio .. a distorsio
Distosquilla .. a mantis shrimp
Distromium .. a brown alga
Disyringa .. a sponge
Ditela .. a sponge
Ditria .. a red alga
Ditropisena .. a gastropod
Ditrupa .. a tube worm
Ditylum .. a diatom
Divalucina .. a cockle
Divaricella .. a cockle
Divarilima .. a file clam
Dodecaceria .. a polychaete worm
Dodecas .. a caprellid amphipod
Dodecolopoda .. a pycnogonid
Doederleinia .. an ocean bass
Dofleinia .. a sea anemone
Dokonemertes .. a ribbon worm
Dolabella .. a sea hare
Dolabrifera .. a sea hare
Dolichacantha .. a sponge
Dolichiscus .. an isopod
Dolicholagus .. a deepsea smelt
Dolicholana .. a sea louse
Dolicholatirus .. a whelk
Dolichupis .. a bean cowrie
Doliodrilus .. a blood worm
Dolioletta .. a salp
Doliolum .. a salp
Dolloidraco .. a barbled plunderfish
Dolopichthys .. a dreamer
Doloria .. an ostracod
Dolos .. a pebble crab
Domecia .. a crab
Domopora .. a bryozoan
Domromeus .. an ostracod
Donax .. a pipi
Doowia .. an amphipod
Dorhynchus .. a spider crab
Doriopsilla .. a nudibranch
Dorippe .. a crab
Doris .. a nudibranch
Dorometra .. a crinoid
Dorphinaxius .. a slow prawn
Dorvillea .. a polychaete worm
Doryrhamphus .. a pipefish
Dosidicus .. a flying squid
Dosima .. a goose barnacle
Dosinia .. a venus shell
Dotalabrus .. a wrasse
Doto .. a nudibranch
Dotyophycus .. a red alga
Dougaloplus .. a brittlestar
Doxomysis .. a mysid
Drachiella .. a crab
Dragmacidon .. a sponge
Drepane .. a sicklefish
Drepanophora .. a bryozoan
Drewiana .. a red alga
Drifa .. a soft coral
Drilonereis .. a polychaete worm
Drombus .. a goby
Dromidiopsis .. a sponge crab
Druinella .. a sponge
Drummondia .. an amphipod
Dudresnaya .. a red alga
Dugong .. a dugong or sea cow
Dulichiella .. an amphipod
Dulzura .. an amphipod
Dumea .. a spider crab
Dumus .. an ascidian (sea squirt)
Duncanopsammia .. a stony coral
Dunckerocampus .. a pipefish
Dunhevedia .. a water flea
Dunocyathus .. a stony coral
Duoconclavis .. a bivalve
Duplicaria .. an auger shell
Durckheimia .. a pea crab
Duridrilus .. a blood worm
Durvillaea .. a brown alga
Dussumieria .. a herring
Dynamena .. a hydroid
Dynamene .. an isopod
Dynamenella .. an isopod
Dynamenopsis .. an isopod
Dynoides .. an isopod
Dynomene .. a crab
Dysalotus .. a swallower
Dysidea .. a sponge
Dysideopsis .. a sponge
Dysponetus .. a polychaete worm
Eatoniella .. a gastropod
Ebalia .. a pebble crab
Ebaliopsis .. a pebble crab
Ebinania .. a blobfish
Ebosia .. a lionfish
Echelus .. a snake eel
Echeneis .. a remora
Echidna .. a moray eel
Echinaster .. a seastar
Echineulima .. an eulima
Echiniphimedia .. an amphipod
Echinisca .. a water flea
Echinocardium .. a heart urchin
Echinochalina .. a sponge
Echinoclathria .. a sponge
Echinocucumis .. a holothurian
Echinocyamus .. a sand dollar
Echinodictyum .. a sponge
Echinodiscus .. a sand dollar
Echinoecus .. a hairy crab
Echinogobius .. a goby
Echinogorgia .. an octocoral
Echinolampas .. a heart urchin
Echinolatus .. a swimming crab
Echinolittorina .. a periwinkle
Echinometra .. a sea urchin
Echinomorpha .. a stony coral
Echinomunna .. an isopod
Echinoneus .. a heart urchin
Echinophoria .. a helmet shell
Echinophryne .. a frogfish
Echinophyllia .. a stony coral
Echinoplana .. a flatworm
Echinopleura .. an isopod
Echinopora .. a stony coral
Echinorhinus .. a bramble shark
Echinosquilla .. a mantis shrimp
Echinostrephus .. a sea urchin
Echinostylinos .. a sponge
Echinothamnion .. a red alga
Echinothrix .. a sea urchin
Echiodon .. a pearlfish
Echiostoma .. a scaleless dragonfish
Echiurus .. an echiuran worm
Ecionemia .. a sponge
Ecklonia .. a kelp (brown alga)
Ecsenius .. a blenny
Ecteinascidia .. an ascidian (sea squirt)
Ectias .. an isopod
Ectocarpus .. a brown alga
Ectreposebastes .. a deepwater scorpionfish
Ectyodoryx .. a sponge
Ectyomyxilla .. a sponge
Ectyonopsis .. a sponge
Ectyoplasia .. a sponge
Edelia .. a flagtail
Edentoliparis .. a snailfish
Edenttellina .. a bivalved sacoglossan
Edgbastonia .. a hydrobiid snail
Edotia .. an isopod
Eduarctus .. a shovel-nosed or slipper lobster
Edwardsia .. a sea anemone
Eeyorius .. a morid cod
Egglestonichthys .. a goby
Eglisia .. a wentletrap
Egretta .. a heron or egret
Eguchipsammia .. a stony coral
Ehlersileanira .. a polychaete worm
Eiconaxius .. a slow prawn
Eilhardia .. a calcareous sponge
Einara .. a slickhead
Eisothistos .. an isopod
Eknomiaster .. a seastar
Elachista .. a brown alga
Elagatis .. a trevally
Elamena .. a false spider crab
Elamenopsis .. a false spider crab
Elaphognathia .. an isopod
Elaphoidella .. a copepod
Elasmopus .. an amphipod
Elates .. a flathead
Electra .. a bryozoan
Electroma .. a pearl oyster
Electrona .. a lanternfish
Eledone .. an octopus
Eledonella .. an octopod
Eleotris .. a gudgeon
Eleutheromenia .. a neonemioid aplacophoran
Eleutheronema .. a threadfin salmon
Elisiella .. a red alga
Ellatrivia .. a bean cowrie
Ellisella .. an octocoral
Ellisina .. a bryozoan
Ellobium .. an air-breathing snail
Elminius .. a barnacle
Elops .. a giant herring
Elpeddo .. an amphipod
Elthusa .. an isopod
Elysia .. a seaslug
Elysiella .. a seaslug
Elzerina .. a bryozoan
Emarginula .. a keyhole limpet
Emballotheca .. a bryozoan
Emiliania .. a coccolothophorid
Eminooecia .. a bryozoan
Emma .. a bryozoan
Emmelichthys .. a bonnetmouth
Emydocephalus .. a sea snake
Enallopsammia .. a stony coral
Enantia .. a flatworm
Enantiocladia .. a red alga
Encheliophis .. a pearlfish
Enchelycore .. a moray eel
Enchelynassa .. a moray eel
Enchelyurus .. a blenny
Encrasicholina .. an anchovy
Encyothalia .. a brown alga
Endarachne .. a brown alga
Endectyon .. a sponge
Endeis .. a pycnogonid
Endevoura .. an amphipod
Endocyathopora .. a stony coral
Endopachys .. a stony coral
Endophyton .. a green alga
Endopsammia .. a stony coral
Endosiphonia .. a red alga
Endoxocrinus .. a stalked crinoid
Engaeus .. a freshwater crayfish or yabby
Engaewa .. a freshwater crayfish or yabby
Engidotea .. an isopod
Engina .. a whelk
Engraulis .. an anchovy
Engyprosopon .. a lefteye flounder
Enhalus .. a seagrass
Enhydrina .. a sea snake
Enigmapercis .. a duckbill
Enigmaplax .. a crab
Enigmonia .. a jingle shell
Enispa .. an isopod
Enneapterygius .. a triplefin
Ennucula .. a nut cockle
Enoplolambrus .. a crabs
Enoplometopus .. a reef lobster
Enoplosus .. an old wife
Enoploteuthis .. an armed squid or enope squid
Enosteoides .. a porcelain crab
Enriquea .. a squat lobster
Ensiculus .. a razor clam
Entacmaea .. a sea anemone
Entalina .. a tusk shell
Entalophoroecia .. a bryozoan
Enteroctopus .. an octopus
Enteromorpha .. a green alga
Entocladia .. a green alga
Entomacrodus .. a blenny
Entomoneis .. a diatom
Entomonyx .. a spider crab
Entophilus .. a parasitic isopod
Entricoplax .. a goneplacid crab
Enypniastes .. a holothurian
Eocallionymus .. a dragonet
Eocuma .. a cumacean
Eocyzicus .. a clam shrimp
Eogynodiastylis .. a cumacean
Eohemithiris .. a brachiopod
Eoleptestheria .. a clam shrimp
Eonemertes .. a ribbon worm
Eophliantis .. an amphipod
Eophreatoicus .. a phreatic isopod
Eorchestia .. an amphipod
Epacrosina .. a brachiopod
Epetriodus .. a cuskeel
Ephalophis .. a sea snake
Ephesiella .. a polychaete worm
Ephippias .. a spider crab
Ephippodonta .. a bivalve
Ephippodontoana .. a bivalve
Ephippodontomorpha .. a bivalve
Ephydatia .. a freshwater sponge
Ephyrina .. a carid shrimp
Epiactaea .. a black-fingered crab
Epiactis .. a sea anemone
Epibulus .. a wrasse
Epicladia .. a green alga
Epicodakia .. a cockle
Epidiopatra .. a polychaete worm
Epidirella .. a gastropod
Epidirona .. a gastropod
Epigodromia .. a sponge crab
Epigonichthys .. a lancelet
Epigonus .. a cardinalfish
Epigrapsus .. a crab
Epikopais .. an isopod
Epimenia .. a neonemioid aplacophoran
Epimeria .. an amphipod
Epimeriella .. an amphipod
Epinephelides .. a rockcod
Epinephelus .. a rockcod
Epipedodromia .. a sponge crab
Epipedonana .. an isopod
Epipenaeon .. a parasitic isopod
Epiphloea .. a red alga
Epipontonia .. a carid shrimp
Episiphon .. a tusk shell
Epithemia .. a diatom
Epitonium .. a wentletrap
Epixanthus .. a crab
Epizoanthus .. a zoanthid anemone
Eplumula .. a carrier crab
Epopella .. a barnacle
Eptatretus .. a hagfish
Epymenia .. a red alga
Equichlamys .. a scallop
Ercolania .. a sea slug
Eremisopus .. a phreatic isopod
Eremopyga .. a sea urchin
Eretmichthys .. a cuskeel
Eretmochelys .. a sea turtle
Ericthonius .. an amphipod
Ericusa .. a volute
Erinaceusyllis .. a polychaete worm
Eriphia .. a crab
Erisphex .. a velvetfish
Erosa .. a stonefish
Errina .. a hydrocoral
Erugosquilla .. a mantis shrimp
Erylus .. a sponge
Erythrocladia .. a red alga
Erythroclonium .. a red alga
Erythroglossum .. a red alga
Erythropodium .. an octocoral
Erythrops .. a mysid
Erythrosquilla .. a mantis shrimp
Erythrotrichia .. a red alga
Erythrymenia .. a red alga
Esacus .. a thick-knee
Escharella .. a bryozoan
Escharina .. a bryozoan
Escharoides .. a bryozoan
Escualosa .. a herring
Esperiopsis .. a sponge
Etelis .. a tropical snapper
Eteone .. a polychaete worm
Ethalia .. a top shell
Ethminolia .. a top shell
Ethusina .. a crab
Etisus .. a black-fingered crab
Etmopterus .. a lantern shark
Etrumeus .. a herring
Eualus .. a hump-backed shrimp
Euantedon .. a crinoid
Euapta .. a holothurian
Euastacus .. a freshwater crayfish or yabby
Eubalaena .. a right whale
Eubalichthys .. a leatherjacket
Eubittium .. a mud creeper
Eucalanus .. a calanoid copepod
Eucalathis .. a brachiopod
Eucampia .. a diatom
Eucasta .. a barnacle
Euchaeta .. a calanoid copepod
Euchaetomera .. a mysid
Euchaetomeropsis .. a mysid
Euchalina .. a sponge
Euchelus .. a top shell
Eucheuma .. a red alga
Euchirograpsus .. a crab
Euchone .. a fan worm
Eucidaris .. a sea urchin
Euciroa .. a bivalve
Euclavella .. an ascidian (sea squirt)
Eucleoteuthis .. a flying squid
Euclichthys .. a eucla cod
Euclosia .. a pebble crab
Euclymene .. a polychaete worm
Eucoelium .. an ascidian (sea squirt)
Eucopia .. a lophogastrid
Eucranta .. a scale worm
Eucrassatella .. a cockle
Eucrate .. a crab
Eucrenonaspides .. a syncarid
Eucrossorhinus .. a wobbegong
Eucyclops .. a cyclopoid copepod
Eudendrium .. a hydroid
Eudiocrinus .. a crinoid
Eudistoma .. an ascidian (sea squirt)
Eudolium .. a tun shell
Eudorella .. a cumacean
Eudyptes .. a penguin
Eudyptula .. a penguin
Eufistulana .. a flask cockle
Eugaimardia .. a bivalve
Euginoma .. a bryozoan
Eugnathogobius .. a goby
Eugonatonotus .. a carid shrimp
Eugyra .. an ascidian (sea squirt)
Euherdmania .. an ascidian (sea squirt)
Euidotea .. an isopod
Eulaeospira .. a tube worm
Eulalia .. a polychaete worm
Euleptorhamphus .. a garfish
Eulima .. an eulima
Eulimnadia .. a clam shrimp
Eulitoma .. an eulima
Eumarcia .. a venus shell
Eumecichthys .. a crestfish
Eumedonus .. a hairy crab
Eumegistus .. a pomfret
Eumida .. a polychaete worm
Eumunida .. a squat lobster
Eunapius .. a freshwater sponge
Eunaticina .. a sand snail
Eunereis .. a polychaete worm
Eunice .. a polychaete worm
Eunoe .. a scale worm
Eunomobdella .. a leech
Eupasiphae .. a carid shrimp
Eupatagus .. a heart urchin
Eupaxia .. a bryozoan
Eupetrichthys .. a wrasse
Euphausia .. a euphausiid
Euphilomedes .. an ostracod
Euphione .. a scale worm
Euphrosine .. a polychaete worm
Euphyllia .. a stony coral
Eupilumnus .. a crab
Euplectella .. a glass sponge
Euplica .. a dove shell
Eupogonesthes .. a snaggletooth
Eupolymnia .. a polychaete worm
Eupronoe .. a hyperid amphipod
Euprotomicrus .. a sleeper shark
Euprymna .. a dumpling squid
Euptilocladia .. a red alga
Euptilota .. a red alga
Euranophila .. a leech
Euretaster .. a seastar
Eurete .. a glass sponge
Euristhmus .. an eeltail catfish
Euryale .. a snakestar
Euryalona .. a water flea
Eurycyde .. a pycnogonid
Eurydice .. a sea louse
Eurylana .. a sea louse
Eurynome .. a spider crab
Eurypegasus .. a seamoth
Eurypharynx .. a deepsea gulper
Eurypleuron .. a pearlfish
Eurypon .. a sponge
Euryspongia .. a sponge
Eurysquilloides .. a mantis shrimp
Eurystrotos .. a bryozoan
Eurysyllis .. a polychaete worm
Eurythenes .. an amphipod
Eurythoe .. a polychaete worm
Eurytrochus .. a top shell
Euryxanthops .. a black-fingered crab
Eusarsiella .. an ostracod
Euseila .. a creeper
Eusiroides .. an amphipod
Eusirus .. an amphipod
Eusphyra .. a hammerhead shark
Eustomias .. a scaleless dragonfish
Eusurculus .. a live-bearing cusk
Eusyllis .. a polychaete worm
Eusynstyela .. an ascidian (sea squirt)
Euterpina .. a harpacticoid copepod
Euthalenessa .. a polychaete worm
Euthelepus .. a polychaete worm
Euthymella .. creepers
Euthynnus .. a mackerel
Euthyrisella .. a bryozoan
Euthyroides .. a bryozoan
Eutriphora .. creepers
Euxanthus .. a black-fingered crab
Euzonus .. a polychaete worm
Evadne .. a water flea
Evermannella .. a sabretooth fish
Eviota .. a goby
Evistias .. a boarfish
Evoplosoma .. a seastar
Exallias .. a blenny
Exampithoe .. an amphipod
Excellichlamys .. a scallop
Excirolana .. a sea louse
Excoecaria .. an angiosperm (spurge family)
Exechonella .. a bryozoan
Exiquaspira .. an olive shell
Exocerceis .. an isopod
Exochella .. a bryozoan
Exoclimenella .. a carid shrimp
Exocoetus .. a flyingfish
Exoediceroides .. an amphipod
Exoediceros .. an amphipod
Exogone .. a polychaete worm
Exomilopsis .. a dove shell
Exopalicus .. a crab
Exopheticus .. a goneplacid crab
Exophyllum .. a red alga
Exopontonia .. a carid shrimp
Exosiperna .. a mussel
Exosphaeroides .. an isopod
Exosphaeroma .. an isopod
Exostesia .. a bryozoan
Exostoma .. an ascidian (sea squirt)
Exotica .. a clam
Expanathura .. an isopod
Exyrias .. a goby
Facelina .. a nudibranch
Falcidens .. a chaetoderm aplacophoran
Fallax .. a brachiopod
Fallosquilla .. a mantis shrimp
Falsilunatia .. a sand snail
Falsimargarita .. a top shell
Fannyella .. an octocoral
Faorina .. a heart urchin
Farciminaria .. a bryozoan
Farciminellum .. a bryozoan
Farrea .. a glass sponge
Fascaplysinopsis .. a sponge
Fasciculipora .. a bryozoan
Fascinus .. a whelk
Fasciospongia .. a sponge
Fastimysia .. a bivalve
Fauchea .. a red alga
Faucheopsis .. a red alga
Faughnia .. a mantis shrimp
Favia .. a stony coral
Favites .. a stony coral
Favonigobius .. a goby
Favosipora .. a bryozoan
Fax .. a whelk
Feia .. a goby
Felaniella .. a bivalve
Feldmannia .. a brown alga
Fellaster .. a sand dollar
Fenestraspongia .. a sponge
Fenestrulina .. a bryozoan
Fennera .. a carid shrimp
Fenneropenaeus .. a penaeid prawn
Feresa .. a dolphin
Fernandosiphonia .. a red alga
Feroxodon .. a toadfish
Ferrissia .. a freshwater limpet
Festucalex .. a pipefish
Fibularia .. a sand dollar
Fibulia .. a sponge
Ficopomatus .. a tube worm
Ficus .. a fig shell
Figaro .. a catshark
Figorella .. an amphipod
Figularia .. a bryozoan
Filaguria .. a bryozoan
Filellum .. a hydroid
Filicampus .. a pipefish
Filicrisia .. a bryozoan
Filiscala .. a wentletrap
Filophryxus .. a parasitic isopod
Fimbria .. a cockle
Finella .. a gastropod
Fiordichthys .. a live-bearing cusk
Firoloida .. a pelagic gastropod
Fissidentalium .. a tusk shell
Fissilabia .. a gastropod
Fissurisepta .. a keyhole limpet
Fistularia .. a flutemouth
Fizesereneia .. a gall crab
Flabellia .. a green alga
Flabelligera .. a polychaete worm
Flabellina .. a nudibranch
Flabellonema .. a brown alga
Flabellopora .. a bryozoan
Flabellum .. a stony coral
Flagellostomias .. a scaleless dragonfish
Flindersoplax .. a crab
Florectisis .. an octocoral or bamboo coral
Floresorchestia .. an amphipod
Florisphaera .. a coccolothophorid
Florometra .. a crinoid
Flosculipora .. a bryozoan
Flosculosphaera .. a coccolothophorid
Fluvidona .. a hydrobiid snail
Fluviolanatus .. a bivalve
Fluviopupa .. a hydrobiid snail
Foa .. a cardinalfish
Fodinella .. a bryozoan
Foetorepus .. a dragonet
Fonscochlea .. a hydrobiid snail
Forcepia .. a sponge
Forcipiger .. a butterflyfish
Forestia .. a black-fingered crab
Forsterygion .. a triplefin
Fossarina .. a top shell
Fossarus .. a gastropod
Fossatrivia .. a bean cowrie
Foveolaria .. a bryozoan
Foveolocyathus .. a stony coral
Fowleria .. a cardinalfish
Fractolatirus .. a whelk
Fragum .. a heart cockle
Fraudella .. a prettyfin
Fredericella .. a freshwater bryozoan
Fregata .. a frigatebird
Fregetta .. a storm petrel
Frenulina .. a brachiopod
Friedrichia .. a ribbon worm
Frigidocardium .. a heart cockle
Friginatica .. a sand snail
Fritillaria .. a larvacean
Fromia .. a seastar
Frondipora .. a bryozoan
Fronsella .. a bivalve
Fulmarus .. a petrel or shearwater
Fultodromia .. a sponge crab
Fulvia .. a heart cockle
Funafutia .. a cockle
Funchalia .. a penaeid prawn
Fungia .. a stony coral
Fungiacyathus .. a stony coral
Funiculina .. a seapen
Furgaleus .. a hound shark
Fusceulima .. an eulima
Fusiaphera .. a nutmeg shell
Fusigobius .. a goby
Fusinus .. a whelk
Fusitriton .. a triton
Fustiaria .. a tusk shell
Fusus .. a whelk
Gaarderia .. a coccolothophorid
Gabbia .. a gastropod
Gabophlias .. an amphipod
Gabrielona .. a pheasant shell
Gadella .. a morid cod
Gadila .. a tusk shell
Gadomus .. a rat-tail
Gadopsis .. a blackfish
Gadus .. a cod
Gafrarium .. a venus shell
Gaidropsarus .. a phycine hake
Gaillardiellus .. a black-fingered crab
Gaimardia .. a bivalve
Galacantha .. a squat lobster
Galathea .. a squat lobster
Galatheabdella .. a fish leech
Galathella .. an amphipod
Galaxaura .. a red alga
Galaxea .. a stony coral
Galaxias .. a galaxias
Galaxiella .. a galaxias
Galearctus .. a shovel-nosed or slipper lobster
Galene .. a crab
Galeocerdo .. a whaler shark
Galeodea .. a helmet shell
Galeolaria .. a tube worm
Galeomma .. a bivalve
Galeopsis .. a bryozoan
Galeorhinus .. a hound shark
Galeus .. a catshark
Galiteuthis .. a bathyscaphoid squid
Gambusia .. a livebearer
Gammarella .. an amphipod
Gammaropsella .. an amphipod
Gammaropsis .. an amphipod
Ganba .. an amphipod
Gandalfus .. a crab
Ganonema .. a red alga
Gardineria .. a stony coral
Gardineroseris .. a stony coral
Gareia .. a parasitic isopod
Gargariscus .. an armour gurnard
Gari .. a bivalve
Gariwerdeus .. a phreatic isopod
Garrodia .. a storm petrel
Garthambrus .. a crabs
Gasterochisma .. a mackerel
Gastrochaena .. a flask cockle
Gastrolepidia .. a scale worm
Gastropteron .. a bat-wing seaslug
Gastroptychus .. a squat lobster
Gastrosaccus .. a mysid
Gatliffena .. a dove shell
Gattya .. a hydroid
Gattya .. a red alga
Gavialiceps .. a conger eel
Gazameda .. a screw shell
Gazza .. a ponyfish
Gbroidea .. an amphipod
Gebiacantha .. a slow prawn
Gecarcoidea .. a crab
Gelastocaris .. a hump-backed shrimp
Gelidiella .. a red alga
Gelidiopsis .. a red alga
Gelidium .. a red alga
Gelinaria .. a red alga
Gelliodes .. a sponge
Gellius .. a sponge
Gemina .. a green alga
Geminocarpus .. a brown alga
Gemmula .. a gastropod
Gempylus .. a gemfish
Genicanthus .. an angelfish
Gennadas .. a penaeid prawn
Gennaeosinum .. a sand snail
Genocidaris .. a sea urchin
Genus B .. a clingfish
Genus C .. a clingfish
Genypterus .. a cuskeel
Geocharax .. a freshwater crayfish or yabby
Geodia .. a sponge
Geograpsus .. a shore crab
Georgeoplax .. a crab
Geotria .. a lamprey
Gephyroberyx .. a roughy
Gephyrocapsa .. a coccolothophorid
Gephyrocuma .. a cumacean
Gephyrothuria .. a holothurian
Gergovia .. a nutmeg shell
Gerlachea .. an Antarctic dragonfish
Gerongia .. a box jellyfish
Gerres .. a silverbiddy
Gheegerus .. an amphipod
Gibbagnathia .. an isopod
Gibberosus .. an amphipod
Gibberythrops .. a mysid
Gibbularctus .. a shovel-nosed or slipper lobster
Gibsmithia .. a red alga
Gigantactis .. a whipnose anglerfish
Gigantopora .. a bryozoan
Gigantura .. a telescopefish
Gigartina .. a red alga
Giniphargus .. an amphipod
Gippsia .. an amphipod
Giranauria .. a spider crab
Giraudia .. a brown alga
Girella .. a drummer
Gitanogeiton .. an amphipod
Gitanopsis .. an amphipod
Giuris .. a gudgeon
Glabropilumnus .. a hairy crab
Glacidorbis .. a freshwater snail
Gladiolithus .. a coccolothophorid
Glandiceps .. an enteropneust
Glaphyrymenia .. a red alga
Glauconome .. a cockle
Glaucosoma .. a pearl perch
Glaucostegus .. a guitarfish
Glaucus .. a pelagic nudibranch
Gliscolithus .. a coccolothophorid
Globicephala .. a dolphin
Globivenus .. a venus shell
Globosolembos .. an amphipod
Gloiocladia .. a red alga
Gloioderma .. a red alga
Gloiodermatopsis .. a red alga
Gloiophloea .. a red alga
Gloiophyllis .. a red alga
Gloiosaccion .. a red alga
Gloiotrichus .. a red alga
Glorandaniotes .. an amphipod
Gloripallium .. a scallop
Glossamia .. a cardinalfish
Glossanodon .. a herring smelt
Glossobalanus .. an enteropneust
Glossobius .. an isopod
Glossocephalus .. a hyperid amphipod
Glossodoris .. a nudibranch
Glossogobius .. a goby
Glossomaera .. an amphipod
Glossophora .. a brown alga
Glossus .. a heart cockle
Glycera .. a polychaete worm
Glycerella .. a polychaete worm
Glycinde .. a polychaete worm
Glycymeris .. a dog cockle
Glyphis .. a whaler shark
Glyphocrangon .. a carid shrimp
Glyphocuma .. a cumacean
Glyphodiscus .. a seastar
Glyphoperidium .. a sea anemone
Glyphus .. a carid shrimp
Glyptauchen .. a fortesque
Glyptometra .. a crinoid
Glyptonotus .. an isopod
Glyptoparus .. a blenny
Glyptophidium .. a cuskeel
Glyptozaria .. a creeper
Glypturus .. a ghost shrimp or marine yabby
Gnathanacanthus .. a red velvetfish
Gnathanodon .. a trevally
Gnathia .. an isopod
Gnathiphimedia .. an amphipod
Gnathodentex .. an emperor
Gnatholepis .. a goby
Gnathophausia .. a lophogastrid
Gnathophis .. a conger eel
Gnathophylloides .. a shrimp
Gnathophyllum .. a shrimp
Gobiodon .. a goby
Gobiomorphus .. a gudgeon
Gobiopsis .. a goby
Gobiopterus .. a goby
Goddardobdella .. a leech
Golfingia .. a sipunculan worm
Gollumedes .. a tanaidacean
Gomeza .. a crab
Gomophia .. a seastar
Gomphina .. a venus shell
Gomphosus .. a wrasse
Gonatonotus .. a hairy crab
Gonatus .. a gonate squid
Gonaxia .. a hydroid
Gondogeneia .. an amphipod
Goniada .. a polychaete worm
Goniastrea .. a stony coral
Gonichthys .. a lanternfish
Goniocidaris .. a sea urchin
Goniodiscaster .. a seastar
Gonioinfradens .. a swimming crab
Goniopora .. a stony coral
Gonodactylaceus .. a mantis shrimp
Gonodactylellus .. a mantis shrimp
Gonodactyloideus .. a mantis shrimp
Gonodactylus .. a mantis shrimp
Gononema .. a brown alga
Gononemertes .. a ribbon worm
Gonorynchus .. a beaked salmon
Gonostoma .. a bristlemouth
Gonyaulax .. a dinoflagellate
Goratelson .. an amphipod
Gordonella .. a penaeid prawn
Goreopagurus .. a hermit crab
Gorgasia .. a conger eel
Gorgonariana .. a hairy crab
Gorgonisis .. an octocoral or bamboo coral
Gorgonocephalus .. a basketstar
Gorgonorhynchus .. a ribbon worm
Gouldia .. a venus shell
Gourmya .. a creeper
Gourretia .. a mud shrimp
Gracila .. a rockcod
Gracilaria .. a red alga
Gracilariophila .. a red alga
Gracilariopsis .. a red alga
Gracilechinus .. a sea urchin
Graciliphotis .. an amphipod
Gracilispira .. an olive shell
Grahamina .. a triplefin
Gramastacus .. a freshwater crayfish or yabby
Grammatobothus .. a lefteye flounder
Grammatorcynus .. a mackerel
Grammicolepis .. a scaly dory
Grammistes .. a soapfish
Grammistops .. a soapfish
Grammonus .. a live-bearing cusk
Grampus .. a dolphin
Granata .. a top shell
Grandidierella .. an amphipod
Graneledone .. an octopus
Grania .. an oligochaete worm
Granicorium .. a venus shell
Granobrissoides .. a heart urchin
Grantessa .. a calcareous sponge
Grantia .. a calcareous sponge
Grantiopsis .. a calcareous sponge
Granulifusus .. a whelk
Grapsus .. a shore crab
Graptacme .. a tusk shell
Graptoleberis .. a water flea
Grateloupia .. a red alga
Gregariella .. a mussel
Gregarinidra .. a bryozoan
Griffinia .. a spider crab
Griffithsia .. a red alga
Grimalditeuthis .. a squid
Grimpella .. an octopus
Grypachaeus .. a spider crab
Guancha .. a calcareous sponge
Guernea .. an amphipod
Guildfordia .. a turban shell
Guinardia .. a diatom
Guiryella .. a red alga
Guitarra .. a sponge
Gulsonia .. a red alga
Gunnellichthys .. a dartfish
Guttigadus .. a morid cod
Gutuapseudes .. a tanaidacean
Guynia .. a stony coral
Guyu .. a temperate bass
Gvozdarus .. an icefish
Gygis .. a gull, skua, noddy or tern
Gymnangium .. a hydroid
Gymnanthenea .. a seastar
Gymnapistes .. a fortesque
Gymnapogon .. a cardinalfish
Gymnechinus .. a sea urchin
Gymnocranius .. an emperor
Gymnodinium .. a dinoflagellate
Gymnodoris .. a nudibranch
Gymnodraco .. an Antarctic dragonfish
Gymnogongrus .. a red alga
Gymnolophus .. a brittlestar
Gymnomuraena .. a moray eel
Gymnonereis .. a polychaete worm
Gymnosarda .. a mackerel
Gymnoscopelus .. a lanternfish
Gymnothamnion .. a red alga
Gymnothorax .. a moray eel
Gymnura .. a butterfly ray
Gynodiastylis .. a cumacean
Gyptis .. a polychaete worm
Gyrineum .. a triton
Gyrinomimus .. a whalefish
Gyrophyllum .. a seapen
Gyrothyris .. a brachiopod
Habeobdella .. a leech
Hacelia .. a seastar
Hadrachaeta .. a polychaete worm
Hadromastax .. an isopod
Hadropenaeus .. a penaeid prawn
Hadrosquilla .. a mantis shrimp
Haematopus .. an oystercatcher
Halaelurus .. a catshark
Halaphritis .. a thornfish
Halargyreus .. a morid cod
Halecium .. a hydroid
Haledromia .. a sponge crab
Halemysis .. a mysid
Haletta .. a rock whiting
Haliaeetus .. an eagle or hawk or ally
Haliastur .. an eagle or hawk or ally
Halicampus .. a pipefish
Halicarcinides .. a false spider crab
Halicarcinus .. a false spider crab
Halichoeres .. a wrasse
Halichondria .. a sponge
Halichrysis .. a red alga
Haliclona .. a sponge
Halicmetus .. a seabat
Halicyclops .. a cyclopoid copepod
Halieutaea .. a seabat
Halieutopsis .. a seabat
Halieutopsis .. a seabat
Haliichthys .. a pipefish
Halimanemertes .. a ribbon worm
Halimeda .. a green alga
Halimede .. a crab
Halimochirurgus .. a deepwater tripodfish
Haliogeneia .. an amphipod
Haliophasma .. an isopod
Haliotis .. an abalone
Haliporoides .. a penaeid prawn
Haliporus .. a penaeid prawn
Haliptilon .. a red alga
Haliris .. a bivalve
Halisarca .. a sponge
Halitiara .. a hydroid
Halityle .. a seastar
Halobaena .. a petrel or shearwater
Halocynthia .. an ascidian (sea squirt)
Halodule .. a seagrass
Halomitra .. a stony coral
Haloniscus .. a terrestrial isopod
Halonympha .. a bivalve
Halophila .. a bryozoan
Halophila .. a seagrass
Halophiloscia .. an isopod
Halophryne .. a frogfish
Haloplegma .. a red alga
Halopteris .. a brown alga
Halopteris .. a hydroid
Haloptilus .. a calenoid copepod
Halosauropsis .. a halosaur
Halosaurus .. a halosaur
Halosbaena .. a crustaceans
Halothrix .. a brown alga
Halydictyon .. a red alga
Halymenia .. a red alga
Hamacantha .. a sponge
Hamacuna .. a cockle
Hamalpheus .. a snapping shrimp
Hamiger .. a carid shrimp
Hamigera .. a sponge
Hamingia .. an echiuran worm
Haminoea .. a bubble shell
Hamodactyloides .. a carid shrimp
Hamodactylus .. a carid shrimp
Hamopontonia .. a carid shrimp
Hannia .. a grunter
Hansenolana .. a sea louse
Hansenomysis .. a mysid
Hapalocarcinus .. a gall crab
Hapalochlaena .. an octopus
Hapalogenys .. a grunter bream
Hapalosoma .. a sea urchin
Hapalospongidion .. a brown alga
Haplocheira .. an amphipod
Haplodendron .. an isopod
Haplomacrourus .. a whiptail
Haplomesus .. an isopod
Haploniscus .. an isopod
Haploops .. an amphipod
Haplophiura .. a brittlestar
Haplophryne .. a leftvent anglerfish
Haplostylus .. a mysid
Haplosyllis .. a polychaete worm
Haptolana .. a sea louse
Haptosquilla .. a mantis shrimp
Haraldiophyllum .. a red alga
Harbansus .. an ostracod
Harmothoe .. a scale worm
Harpa .. a harp shell
Harpadon .. a Bombay duck
Harpecia .. a bryozoan
Harpiliopsis .. a carid shrimp
Harpilius .. a carid shrimp
Harpiniopsis .. an amphipod
Harpiosquilla .. a mantis shrimp
Harpovoluta .. a volute
Harriotta .. a spookfish
Harrovia .. a hairy crab
Hartmeyeria .. an ascidian (sea squirt)
Hastatobythites .. a live-bearing cusk
Hastingsia .. a bryozoan
Hastula .. an auger shell
Haswellia .. an isopod
Haswelliporina .. a bryozoan
Hauchiella .. a polychaete worm
Haustator .. a screw shell
Haustellum .. a gastropod
Havelockia .. a holothurian
Hayashidonus .. a carid prawn
Hayaster .. a coccolothophorid
Hazeus .. a goby
Hebellopsis .. a hydroid
Hebeulima .. an eulima
Hebra .. a whelk
Hecatonema .. a brown alga
Hedgpethia .. a pycnogonid
Hedingia .. a holothurian
Hedleytriphora .. creepers
Helcogramma .. a triplefin
Heliania .. an octocoral
Helicocranchia .. a bathyscaphoid squid
Helicolenus .. an ocean perch
Helicosalpa .. a salp
Helicosphaera .. a coccolothophorid
Heliocidaris .. a sea urchin
Heliofungia .. a stony coral
Heliopora .. a blue coral
Helixotionella .. a bryozoan
Helladosphaera .. a coccolothophorid
Helminthocladia .. a red alga
Helminthora .. a red alga
Helobdella .. a leech
Heloecius .. a crab
Helograpsus .. a shore crab
Hemiaclis .. an eulima
Hemiaegina .. a caprellid amphipod
Hemiarius .. a forktail catfish
Hemiarthrum .. a chiton
Hemiasterella .. a sponge
Hemiaulus .. a diatom
Hemichela .. a pycnogonid
Hemicytherura .. an ostracod
Hemidonax .. a surf clam
Hemigaleus .. a weasel shark
Hemiglyphidodon .. a damselfish
Hemigobius .. a goby
Hemigymnus .. a wrasse
Hemilamprops .. a cumacean
Hemiliostraca .. an eulima
Hemimetis .. a clam
Hemineura .. a red alga
Heminodus .. an armour gurnard
Hemipenaeus .. a penaeid prawn
Hemipodus .. a polychaete worm
Hemipolygona .. a whelk
Hemipristis .. a weasel shark
Hemiramphus .. a garfish
Hemiscyllium .. a longtail carpet shark
Hemisiriella .. a mysid
Hemisquilla .. a mantis shrimp
Hemistomia .. a hydrobiid snail
Hemitaurichthys .. a butterflyfish
Hemitedania .. a sponge
Hemithyone .. a holothurian
Hemitoma .. a keyhole limpet
Hemitriakis .. a hound shark
Hemityphis .. a hyperid amphipod
Heniochus .. a butterflyfish
Hennedya .. a red alga
Henricia .. a seastar
Hepatoporus .. a black-fingered crab
Hephaestus .. a grunter
Hepomadus .. a penaeid prawn
Heptanthura .. an isopod
Heptranchias .. a cowshark
Heraldia .. a pipefish
Herbstia .. a spider crab
Herdmanella .. a scale worm
Herdmania .. an ascidian (sea squirt)
Heritiera .. an angiosperm (Sterculia family)
Herklotsichthys .. a herring
Hermenia .. a scale worm
Heronidrilus .. a blood worm
Herpetopoma .. a top shell
Herpodiscus .. a brown alga
Herpolitha .. a stony coral
Herponema .. a brown alga
Herposiphonia .. a red alga
Herwigia .. a slickhead
Hesione .. a polychaete worm
Hesionides .. a polychaete worm
Hesionura .. a polychaete worm
Hesychoxenia .. a bryozoan
Heteractis .. a sea anemone
Heteralepas .. a barnacle
Heteraulacus .. a dinoflagellate
Hetereleotris .. a goby
Heterias .. an isopod
Heterobrissus .. a heart urchin
Heterocardia .. a clam
Heterocarpus .. a pandalid shrimp
Heterocentrotus .. a sea urchin
Heteroclinus .. a weedfish
Heteroconger .. a conger eel
Heterocucumis .. a holothurian
Heterocyathus .. a stony coral
Heterodinium .. a dinoflagellate
Heterodontus .. a horn shark
Heterodoxia .. a red alga
Heterodrilus .. a blood worm
Heteroglypta .. a bivalve
Heteromastides .. a polychaete worm
Heteromastus .. a polychaete worm
Heterometra .. a crinoid
Heteromeyenia .. a freshwater sponge
Heteromolpadia .. a holothurian
Heteromycteris .. a sole
Heteromysis .. a mysid
Heteromysoides .. a mysid
Heteronardoa .. a seastar
Heteronida .. a squat lobster
Heteronymphon .. a pycnogonid
Heterooecium .. a bryozoan
Heteropanope .. a hairy crab
Heteropenaeus .. a penaeid prawn
Heterophotus .. a snaggletooth
Heterophoxus .. an amphipod
Heteropia .. a calcareous sponge
Heteropilumnus .. a hairy crab
Heteropriacanthus .. a bigeye
Heteropsammia .. a stony coral
Heterorhabdus .. a calanoid copepod
Heterorotula .. a freshwater sponge
Heterosaccus .. a parasitic barnacle
Heteroscarus .. a rock whiting
Heteroserolis .. an isopod
Heterosiphonia .. a red alga
Heterosquilla .. a mantis shrimp
Heterosquilloides .. a mantis shrimp
Heteroteuthis .. a dumpling squid
Heterothamnion .. a red alga
Heterotiara .. a hydroid
Heterozostera .. an eel grass
Hexabathynella .. a syncarid
Hexabranchus .. a nudibranchs
Hexanchus .. a cowshark
Hexanematichthys .. a forktail catfish
Hexaphilia .. a hydromedusa
Hexapinus .. a six-legged crab
Hexaplax .. a six-legged crab
Hexapleomera .. a tanaidaceans
Hexaplex .. a gastropod
Hexapus .. a six-legged crab
Hexatrygon .. a sixgill stingray
Hiantopora .. a bryozoan
Hiatavolva .. an allied cowrie
Hiatella .. a saxicave
Hibiscus .. an angiosperm (mallow family)
Higginsia .. a sponge
Hildenbrandia .. a red alga
Himantolophus .. a footballfish
Himantozoum .. a bryozoan
Himantura .. a stingray
Hime .. a threadsail
Himerometra .. a crinoid
Hincksella .. a hydroid
Hincksia .. a brown alga
Hincksinoflustra .. a bryozoan
Hinea .. a gastropod
Hippa .. a mole crab
Hippaliosina .. a bryozoan
Hippasteria .. a seastar
Hippichthys .. a pipefish
Hippocampus .. a pipefish
Hippolyte .. a hump-backed shrimp
Hippomedon .. an amphipod
Hippomenella .. a bryozoan
Hippomonavella .. a bryozoan
Hipponix .. a horse hoof limpet
Hipponoa .. a polychaete worm
Hippopetraliella .. a bryozoan
Hippopodina .. a bryozoan
Hippoporina .. a bryozoan
Hippopus .. a giant clam
Hipposcarus .. a parrotfish
Hipposcorpaena .. a scorpionfish
Hippospongia .. a sponge
Hippothoa .. a bryozoan
Hircella .. a caprellid amphipod
Hircinia .. a sponge
Hirsutia .. a crustacean
Hirsutithallia .. a red alga
Hirsutodynomene .. a crab
Hirsutonuphis .. a polychaete worm
Hirundichthys .. a flyingfish
Histampica .. a brittlestar
Histiobranchus .. a basketwork eel
Histiodraco .. a barbled plunderfish
Histiogamphelus .. a pipefish
Histioneis .. a dinoflagellate
Histiophryne .. a frogfish
Histiopterus .. a boarfish
Histioteuthis .. a sail squid, jewel squid or umbrella squid
Histocidaris .. a sea urchin
Histrio .. a frogfish
Hodometrica .. a tanaidacean
Hoho .. an amphipod
Holascus .. a glass sponge
Holcotrochus .. a stony coral
Holmsella .. a red alga
Hologymnosus .. a wrasse
Hololepida .. a scale worm
Hololepidella .. a scale worm
Holophryxus .. a parasitic isopod
Holopneustes .. a sea urchin
Holopsamma .. a sponge
Holothuria .. a holothurian
Holotrichia .. a red alga
Holtbyrnia .. a tubeshoulder
Homalina .. a clam
Homalocantha .. a gastropod
Homalocidaris .. a sea urchin
Homalodromia .. a sponge crab
Homalometra .. a crinoid
Homasterope .. an ostracod
Homaxinella .. a sponge
Homoeodictya .. a sponge
Homoeostrichus .. a brown alga
Homoioplax .. a crab
Homola .. a crab
Homolochunia .. a crab
Homolodromia .. a crab
Homologenus .. a crab
Homostolus .. a cuskeel
Homozygosphaera .. a coccolothophorid
Hoplakithara .. a sponge
Hoplaster .. a seastar
Hoplichthys .. a ghost flathead
Hoplobrotula .. a cuskeel
Hoplochalina .. a sponge
Hoplodoris .. a dorid nudibranch
Hoplolatilus .. a tilefish
Hoplophrys .. a spider crab
Hoplostethus .. a roughy
Hormathia .. a sea anemone
Hormophysa .. a brown alga
Hormosira .. a brown alga
Hormosoma .. a sea anemone
Hornellia .. an amphipod
Hornera .. a bryozoan
Horologica .. a creeper
Howella .. a cardinalfish
Hubrechtella .. a ribbon worm
Huenia .. a spider crab
Hummbrella .. a red alga
Humphreyia .. a watering pot shell
Humphreyscandona .. an ostracod
Hurleya .. an amphipod
Huxleyia .. a bivalve
Hyachelia .. an amphipod
Hyale .. an amphipod
Hyalinella .. a freshwater bryozoan
Hyalinoecia .. a polychaete worm
Hyalonema .. a glass sponge
Hyalopecten .. a scallop
Hyaloteuthis .. a flying squid
Hyastenus .. a spider crab
Hyattella .. a sponge
Hybochelus .. a top shell
Hybocodon .. a hydroid
Hyboscolex .. a polychaete worm
Hydatina .. a bubble shell
Hydnophora .. a stony coral
Hydrelaps .. a sea snake
Hydroclathrus .. a brown alga
Hydrococcus .. a snail
Hydrodendron .. a hydroid
Hydroides .. a tube worm
Hydrolagus .. a shortnose chimaera
Hydrolithon .. a red alga
Hydrophis .. a sea snake
Hydrurga .. a true seal
Hygophum .. a lanternfish
Hygrosoma .. a sea urchin
Hymedesmia .. a sponge
Hymenancora .. a sponge
Hymenena .. a red alga
Hymeniacidon .. a sponge
Hymenocephalus .. a whiptail
Hymenocera .. a shrimp
Hymenocladia .. a red alga
Hymenodora .. a carid shrimp
Hymenopenaeus .. a penaeid prawn
Hymenosoma .. a false spider crab
Hymesigmia .. a sponge
Hyomacrourus .. a whiptail
Hyotissa .. an oyster
Hypererythrops .. a mysid
Hyperhalosydna .. a scale worm
Hyperia .. a hyperid amphipod
Hyperiella .. a hyperid amphipod
Hyperietta .. a hyperid amphipod
Hyperioides .. a hyperid amphipod
Hyperionyx .. a hyperid amphipod
Hyperlophus .. a herring
Hypermastus .. an eulima
Hyperoche .. a hyperid amphipod
Hyperoedesipus .. a phreatic isopod
Hyperoglyphe .. a trevalla
Hyperoodon .. a beaked whale
Hypnea .. a red alga
Hypnos .. a coffin ray
Hypoatherina .. a hardyhead
Hypocolpus .. a black-fingered crab
Hypodistoma .. an ascidian (sea squirt)
Hypogaleus .. a hound shark
Hypoglossum .. a red alga
Hypograntia .. a calcareous sponge
Hypomyzostoma .. a polychaete worm
Hypoplectrodes .. a rockcod
Hypopleuron .. a cuskeel
Hypopterus .. a giant perch
Hyporhamphus .. a garfish
Hypothalassia .. a crab
Hypotriphora .. creepers
Hypseleotris .. a gudgeon
Hypselodoris .. a nudibranch
Hypselognathus .. a pipefish
Hypsicomus .. a fan worm
Hypsimetopus .. a phreatic isopod
Hypsistozoa .. an ascidian (sea squirt)
Hyridella .. a freshwater mussel
Hyrtios .. a sponge
Iago .. a hound shark
Iais .. an isopod
Ianthella .. a sponge
Ianthopsis .. an isopod
Iasis .. a salp
Iathrippa .. an isopod
Ibacus .. a shovel-nosed or slipper lobster
Ibla .. a stalked barnacle
Icelopagurus .. a hermit crab
Icelozoon .. a bryozoan
Ichnopus .. an amphipod
Ichthyapus .. a snake eel
Ichthyococcus .. a lightfish
Ichthyoxenus .. an isopod
Ichthyscopus .. a stargazer
Icichthys .. a trevalla
Icilius .. an amphipod
Iconaster .. a seastar
Iconometra .. a crinoid
Icuncula .. a cap limpet
Idanthyrsus .. a polychaete worm
Idasola .. a mussel
Idiacanthus .. a black dragonfish
Idiellana .. a hydroid
Idioibla .. a stalked barnacle
Idiolophorhynchus .. a whiptail
Idiomysis .. a mysid
Idiosepius .. a squid
Idiotrochus .. a stony coral
Idiotropiscis .. a pipefish
Idmidronea .. a bryozoan
Idotea .. an isopod
Igene .. an ostracod
Ihlea .. a salp
Ihlopsis .. a crab
Ikeda .. an echiuran worm
Ilbia .. a sea slug
Ilisha .. an ilisha
Illex .. a flying squid
Ilyocryptus .. a water flea
Ilyograpsus .. a crab
Ilyophis .. a basketwork eel
Ilyoplax .. a crab
Imbricaria .. a mitre shell
Imogine .. a flatworm
Incara .. a gudgeon
Incisura .. a slit shell
Indianastra .. a seastar
Indopacetus .. a beaked whale
Indophyllia .. a stony coral
Inegocia .. a flathead
Inella .. creepers
Inermonephtys .. a polychaete worm
Inermosyllis .. a polychaete worm
Inferiolabiata .. a hydrocoral
Inflatella .. a sponge
Inglisella .. a nutmeg shell
Ingolfiella .. an amphipod
Iniforis .. creepers
Iniistius .. a wrasse
Inimicus .. a stonefish
Inkyuleea .. a red alga
Inquisitor .. a gastropod
Insentiraja .. a skate
Insulodrilus .. an oligochaete worm
Interthamnion .. a red alga
Intesius .. a crab
Inversiula .. a bryozoan
Involucrana .. a red alga
Iodictyum .. a bryozoan
Iophon .. a sponge
Iothia .. a limpet
Iotroata .. a sponge
Iotrochota .. a sponge
Iphiculus .. a crab
Iphimedia .. an amphipod
Iphinoe .. a cumacean
Iphione .. a scale worm
Iphiplateia .. an amphipod
Ipnops .. a spiderfish
Iravadia .. a gastropod
Ircinia .. a sponge
Iriatherina .. a rainbowfish
Iridaea .. a red alga
Irolita .. a skate
Irus .. a venus shell
Isanda .. a top shell
Isanemonia .. a sea anemone
Isaurus .. a zonathid anemone
Ischnochiton .. a chiton
Ischnomesus .. an isopod
Ischnopontonia .. a carid shrimp
Ischyrocerus .. an amphipod
Ischyromene .. an isopod
Ischyronemertes .. a ribbon worm
Isidoides .. a gold coral
Isistius .. a sleeper shark
Iso .. a surf sardine
Isocladus .. an isopod
Isoconcha .. a bivalve
Isocyamus .. a whale louse
Isocypridina .. an ostracod
Isodontocardia .. a bivalve
Isognomon .. a false pearl oyster
Isolda .. a polychaete worm
Isoschizoporella .. a bryozoan
Isosecuriflustra .. a bryozoan
Isosicyonis .. a sea anemone
Isotriphora .. creepers
Istiblennius .. a blenny
Istigobius .. a goby
Istiophorus .. a marlin
Isurus .. a mackerel shark
Iulopis .. a hyperid amphipod
Ixa .. a pebble crab
Izanami .. a moon crab
Jaabdella .. a leech
Jacforus .. a black-fingered crab
Jaffaia .. a brachiopod
Jamiesoniella .. a blood worm
Jania .. a red alga
Janicella .. a carid shrimp
Janolus .. a nudibranch
Janthina .. a violet snail
Janua .. a tube worm
Japara .. an amphipod
Japetella .. an octopod
Japonacteon .. a buuble shell
Japonolaeops .. a lefteye flounder
Jardinella .. a hydrobiid snail
Jasminisis .. an octocoral or bamboo coral
Jaspis .. a sponge
Jasptorus .. an amphipod
Jassa .. an amphipod
Jasus .. a spiny lobster
Javania .. a stony coral
Jeanjustia .. an amphipod
Jeannerettia .. a red alga
Jellyella .. a bryozoan
Jenkina .. a calcareous sponge
Jerbarnia .. an amphipod
Jerildaria .. an amphipod
Jigurru .. a caprellid amphipod
Jocaste .. a carid shrimp
Joculator .. a creeper
Joeropsis .. an isopod
Johnius .. a jewfish
Jonas .. a crab
Jordanella .. a pupfish
Jorunna .. a dorid nudibranch
Josephella .. a tube worm
Jouannetia .. a piddock
Joubinella .. an amphipod
Joubiniteuthis .. a squid
Jujubinus .. a top shell
Juletta .. an isopod
Junceella .. an octocoral
Jupiteria .. a beaked cockle
Justitia .. a spiny lobster
Juxtamusium .. a scallop
Kagalana .. a sea louse
Kaiyabdella .. a leech
Kakaducaris .. a freshwater shrimp
Kakanui .. an amphipod
Kali .. a swallower
Kalliapseudes .. a tanaidacean
Kallymenia .. a red alga
Kaloplocamus .. a nudibranch
Kamaka .. an amphipod
Kamoharaia .. a lefteye flounder
Kanekonia .. a velvetfish
Kapala .. a whelk
Kappaphycus .. a red alga
Karroonsyllis .. a polychaete worm
Karstama .. a rock crab
Kasim .. a mantis shrimp
Katelysia .. a venus shell
Katerythrops .. a mysid
Kathetostoma .. a stargazer
Katocalliope .. an amphipod
Katsuwonus .. a mackerel
Kaupichthys .. a false moray eel
Kaupus .. a pipefish
Kellia .. a bivalve
Kempina .. a mantis shrimp
Kemponia .. a carid shrimp
Kentrocapros .. a boxfish
Kerasemna .. a sponge
Keroeides .. an octocoral
Kestratherina .. a hardyhead
Keuphylia .. an isopod
Kimberleybathynella .. a syncarid
Kimberleyeleotris .. a gudgeon
Kimbla .. a spider crab
Kimblaeus .. a pipefish
Kinbergonuphis .. a polychaete worm
Kinnecaris .. a copepod
Kioloaria .. a copepod
Kirchenpaueria .. a hydroid
Kirkpatrickia .. a sponge
Kirsteueria .. a ribbon worm
Kladapheles .. a bryozoan
Klugeflustra .. a bryozoan
Klugella .. a bryozoan
Kogia .. a sperm whale
Kohnia .. a ribbon worm
Kondakovia .. a hooked squid
Kondoleus .. an amphipod
Koonunga .. a syncarid
Kophobelemnon .. a seapen
Kopua .. a clingfish
Koremasphaera .. an isopod
Koroga .. an amphipod
Kotla .. an amphipod
Kowalevskia .. a larvacean
Kraemeria .. a sand dart
Kraftia .. a red alga
Krangalangia .. a crab
Kranosphaera .. an isopod
Kraussia .. a black-fingered crab
Krefftichthys .. a lanternfish
Krithe .. an ostracod
Kryptopterus .. a sheatfish
Ktenosquamisis .. an octocoral or bamboo coral
Kuckuckia .. a brown alga
Kuetzingia .. a red alga
Kuhlia .. a flagtail
Kuiterichthys .. a frogfish
Kulgaphoxus .. an amphipod
Kumba .. a whiptail
Kumococius .. a flathead
Kupellonura .. an isopod
Kurilabyssia .. a limpet
Kuritus .. an amphipod
Kuronezumia .. a whiptail
Kurtus .. a nurseryfish
Kurzia .. a water flea
Kutikina .. a freshwater snail
Kyphosus .. a drummer
Labichthys .. a snipe eel
Labidiaster .. a seastar
Labidocera .. a calanoid copepod
Labidodemas .. a holothurian
Labioporella .. a bryozoan
Labiosthenolepis .. a polychaete worm
Labracinus .. a dottyback
Labracoglossa .. a knifefish
Labraxeudes .. a tanaidacean
Labrichthys .. a wrasse
Labroides .. a wrasse
Labropsis .. a wrasse
Labuanium .. a rock crab
Labyrinthocyathus .. a stony coral
Lacerna .. a bryozoan