Public domain: Species accounts (259 / 1904)

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Species
Calanopia elliptica
Calanus euxinus
Calappa pelii
Caligus pageti
Calliblepharis rammediorum
Callinectes danae
Callinectes sapidus
Callionymus filamentosus
Calliostoma zizyphinum
Callyspongia pergamentacea
Callyspongia siphonella
Calocalanus plumulosus
Caloria indica
Calyptospadix cerulea
Calyptraea chinensis
Campanularia morgansi
Canarium mutabile
Cancer irroratus
Caprella equilibra
Caprella mutica
Caprella penantis
Caprella scaura
Carassius auratus
Carassius gibelio
Carbosphaerella leptosphaerioides
Carcinus maenas
Carpobrotus acinaciformis
Carupa tenuipes
Cassiopea andromeda
Catostomus catostomus
Caulacanthus okamurae
Caulacanthus ustulatus
Caulerpa cylindracea
Caulerpa denticulata
Caulerpa mexicana
Caulerpa racemosa var. lamourouxii f. requienii
Caulerpa taxifolia
Caulerpa taxifolia var. distichophylla
Caulerpa webbiana
Caulibugula arcasounensis
Caulibugula zanzibarensis
Cellana rota
Celleporaria albirostris
Celleporaria aperta
Celleporaria brunnea
Celleporaria inaudita
Celleporaria vermiformis
Celleporella carolinensis
Celleporella hyalina
Celtodoryx ciocalyptoides
Centroceras clavulatum
Centropages furcatus
Cephalothrix simula
Ceramium botryocarpum
Ceramium cimbricum
Ceramium cingulatum
Ceramium circinatum
Ceramium graecum
Ceramium strobiliforme
Ceramium sungminbooi
Ceramium tenuicorne
Ceramium virgatum
Cerastoderma edule
Ceratonereis mirabilis
Cercopagis (Cercopagis) pengoi
Cereus pedunculatus
Cerithidium diplax
Cerithidium perparvulum
Cerithiopsis pulvis
Cerithiopsis tenthrenois
Cerithium columna
Cerithium egenum
Cerithium nesioticum
Cerithium scabridum
Chaetoceros aequatorialis
Chaetoceros circinalis
Chaetoceros concavicornis
Chaetoceros diversus var. papilionis
Chaetoceros lorenzianus
Chaetoceros peruvianus
Chaetoceros rostratus
Chaetoceros throndsenii
Chaetoceros tortissimus
Chaetodipterus faber
Chaetodon auriga
Chaetodon austriacus
Chaetodon larvatus
Chaetogammarus ischnus
Chaetogammarus warpachowskyi
Chaetomorpha aerea
Chaetomorpha capillaris
Chaetomorpha linum
Chaetopleura angulata
Chaetozone corona
Chalinula loosanoffi
Chama asperella
Chama gryphoides
Chama pacifica
Chama sp.
Champsodon nudivittis
Chara connivens
Charybdis (Charybdis) feriata
Charybdis (Charybdis) hellerii
Charybdis (Charybdis) japonica
Charybdis (Charybdis) lucifera
Charybdis (Goniohellenus) longicollis
Chattonella marina
Chattonella marina var. antiqua
Cheilodipterus novemstriatus
Cheilopogon cyanopterus
Chelicorophium curvispinum
Chelicorophium robustum
Chelon haematocheilus
Chelon labrosus
Cherax destructor
Chionoecetes opilio
Chiton cumingsii
Chlorurus rhakoura
Chondracanthus sp.
Chondria arcuata
Chondria coerulescens
Chondria collinsiana
Chondria curvilineata
Chondria polyrhiza
Chondria pygmaea
Chondrus giganteus
Chondrus giganteus f. flabellatus
Chorda filum
Chorizopora brongniartii
Chromodoris quadricolor
Chrysaora hysoscella
Chrysaora pseudoocellata
Chrysonephos lewisii
Chrysymenia ventricosa
Chrysymenia wrightii
Cinachyrella alloclada
Cingulina isseli
Ciona intestinalis
Ciona robusta
Circenita callipyga
Circulus octoliratus
Cirolana harfordi
Cirrenalia basiminuta
Cirrholovenia tetranema
Cladophora flexuosa
Cladophora hutchinsiae
Cladophora patentiramea
Cladophora prolifera
Cladophoropsis membranacea
Cladosiphon zosterae
Cladostephus spongiosus
Clausocalanus arcuicornis
Clavelina dellavallei
Clavelina lepadiformis
Clavelina oblonga
Claviceps purpurea
Clementia papyracea
Clorida albolitura
Clymenella torquata
Clypeomorus bifasciatus
Clytia hemisphaerica
Clytia hummelincki
Clytia linearis
Clytia mccradyi
Clytia paulensis
Cocconeis britannica
Cochlodinium polykrikoides
Codium adhaerens
Codium arabicum
Codium fragile
Codium fragile atlanticum
Codium fragile scandinavicum
Codium fragile subsp. fragile
Codium parvulum
Codium pulvinatum
Codium taylorii
Codium vermilara
Colaconema codicola
Colaconema dasyae
Colaconema garbaryi
Coleusia signata
Colpomenia peregrina
Colpomenia sinuosa
Conchoderma auritum
Congeria leucophaeta leucophaeta
Conomurex persicus
Conopeum reticulum
Conopeum seurati
Conradia eutornisca
Conus arenatus arenatus
Conus fumigatus
Coolia monotis
Corambe obscura
Corbicula fluminalis
Corbicula fluminea
Cordylophora caspia
Coregonus autumnalis
Coregonus muksun
Coregonus nasus
Coregonus peled
Corella eumyota
Corethron pennatum
Coriophora lessepsiana
Cornigerius maeoticus
Corollospora lacera
Corophium volutator
Corymbellus aureus
Coryne eximia
Corynomorpha prismatica
Corynophlaea verruculiformis
Coryphellina rubrolineata
Coscinasterias tenuispina
Coscinodiscus wailesii
Cossura coasta
Costellipitar chordatus
Cotula coronopifolia
Cotylorhiza erythraea
Cradoscrupocellaria bertholletii
Crambe crambe
Crangon crangon
Crangonyx pseudogracilis
Craspedacusta sowerbii
Crassicorophium bonellii
Crassicorophium crassicorne
Crassimarginatella papulifera
Crassostrea rhizophorae
Crassostrea rivularis
Crassostrea sikamea
Crassostrea virginica
Crenidens crenidens
Crepidacantha poissonii
Crepidula fornicata
Crepipatella dilatata
Cristapseudes omercooperi
Crisularia serrata
Critomolgus actiniae
Cryptocentrus caeruleopunctatus
Cryptonemia hibernica
Cryptonemia lomation
Cryptorchestia cavimana
Cryptosula pallasiana
Ctenodrilus serratus
Ctenopharyngodon idella
Cucurbitula cymbium
Cumulospora marina
Cumulospora varia
Cuthona perca
Cutleria multifida
Cyclichthys spilostylus
Cycloscala hyalina
Cylichna villersii
Cymbaloporetta plana
Cymodoce fuscina
Cymodocea nodosa
Cynoglossus sinusarabici
Cynoscion nebulosus
Cynoscion regalis
Cyprinus carpio
Cystodytes dellechiajei