Click the links to browse through the WoRMS marine species taxonomy.
Animalia
  Mollusca
    Polyplacophora
    Gastropoda
      Prosobranchia
      Heterobranchia
      Cocculiniformia
      Neritimorpha
      Vetigastropoda
      Apogastropoda
      Caenogastropoda
        Neogastropoda
        Sorbeoconcha
        [unassigned] Caenogastropoda
        Littorinimorpha
          Littorinoidea
          Rissooidea
            Hydrobiidae
            Assimineidae
            Iravadiidae
            Rissoidae
              Rissoininae
              Rissoinae
                Alvania
                  Alvania aartseni
                  Alvania abstersa
                  Alvania adiaphoros
                  Alvania adinogramma
                  Alvania aeoliae
                  Alvania algeriana
                  Alvania amatii
                  Alvania angioyi
                  Alvania angularis
                  Alvania aspera
                  Alvania aurantiaca
                  Alvania basteriae
                  Alvania beani
                  Alvania canariensis
                  Alvania cancapae
                  Alvania cancellata
                  Alvania carinata
                  Alvania cimex
                  Alvania cimicoides
                  Alvania cingulata
                  Alvania clarae
                  Alvania clathrella
                  Alvania colossophilus
                  Alvania consociella
                  Alvania corona
                  Alvania coseli
                  Alvania datchaensis
                  Alvania dianiensis
                  Alvania dictyophora
                  Alvania dijkstrai
                  Alvania dipacoi
                  Alvania discors
                  Alvania disparilis
                  Alvania dorbignyi
                  Alvania electa
                  Alvania elegantissima
                  Alvania euchila
                  Alvania fischeri
                  Alvania formicarum
                  Alvania fractospira
                  Alvania gagliniae
                  Alvania geryonia
                  Alvania guancha
                  Alvania hallgassi
                  Alvania hirta
                  Alvania hispidula
                  Alvania imperspicua
                  Alvania incognita
                  Alvania internodula
                  Alvania iunoniae
                  Alvania jeffreysi
                  Alvania johannae
                  Alvania joseae
                  Alvania lactea
                  Alvania lamellata
                  Alvania lanciae
                  Alvania leacocki
                  Alvania lineata
                  Alvania litoralis
                  Alvania lucinae
                  Alvania macandrewi
                  Alvania mamillata
                  Alvania marchadi
                  Alvania mediolittoralis
                  Alvania microstriata
                  Alvania minuta
                  Alvania moerchi
                  Alvania moniziana
                  Alvania multiquadrata
                  Alvania nestaresi
                  Alvania nonsculpta
                  Alvania obliqua
                  Alvania pagodula
                  Alvania parvula
                  Alvania piersmai
                  Alvania platycephala
                  Alvania porcupinae
                  Alvania poucheti
                  Alvania pseudoareolata
                  Alvania pseudosyngenes
                  Alvania punctura
                  Alvania renei
                  Alvania rudis
                  Alvania scabra
                  Alvania schwartziana
                  Alvania scrobiculata
                  Alvania sculptilis
                  Alvania settepassii
                  Alvania simulans
                  Alvania sleursi
                  Alvania slieringsi
                  Alvania sororcula
                  Alvania spinosa
                  Alvania stenolopha
                  Alvania subareolata
                  Alvania subcalathus
                  Alvania subcrenulata
                  Alvania subsoluta
                  Alvania tarsodes
                  Alvania tenera
                  Alvania tessellata
                  Alvania testae
                  Alvania tomentosa
                  Alvania verrilli
                  Alvania watsoni
                  Alvania weinkauffi
                  Alvania wyvillethomsoni
                  Alvania zetlandica
                  Alvania zoderi
                  Alvania zylensis
                  Alvania abyssicola
                  Alvania semistriata
                  Alvania wareni
                  Alvania grancanariensis
                  Alvania bicingulata
                  Alvania elisae
                  Alvania vermaasi
                  Alvania oliverioi
                  Alvania villarii
                  Alvania carpenteri
                  Alvania alboranensis
                  Alvania claudioi
                  Alvania dalmatica
                  Alvania janmayeni
                  Alvania seinensis
                  Alvania micropilosa
                  Alvania elenae
                  Alvania hyerensis
                  Alvania suroiti
                  Alvania microtuberculata
                  Alvania funiculata
                  Alvania macella
                  Alvania garrafensis
                  Alvania debruynei
                  Alvania dejongi
                  Alvania turkensis
                  Alvania annobonensis
                  Alvania beanii
                      Alvania beanii calathus
                  Alvania auberiana
                  Alvania colombiana
                  Alvania gradata
                  Alvania precipitata
                  Alvania ignota
                  Alvania flexilis
                  Alvania marioi
                  Alvania regina
                  Alvania richeri
                  Alvania lavaleyei
                  Alvania balearica
                  Alvania josefoi
                  Alvania cabrensis
                  Alvania gemina
                  Alvania portentosa
                  Alvania gascoignei
                  Alvania lampra
                  Alvania emaciata
                  Alvania arubensis
                  Alvania bermudensis
                  Alvania campta
                  Alvania canonica
                  Alvania curacaoensis
                  Alvania deliciosa
                  Alvania faberi
                  Alvania guesti
                  Alvania herwigia
                  Alvania meridioamericana
                  Alvania moolenbeeki
                  Alvania valeriae
                  Alvania gofasi
                  Alvania fariai
                  Alvania lucasana
                  Alvania herrerae
                  Alvania concinna
                  Alvania ferruginea
                  Alvania tumida
                  Alvania compacta
                  Alvania microglypta
                  Alvania oldroydae
                  Alvania rosana
                  Alvania trachisma
                  Alvania halia
                  Alvania purpurea
                  Alvania aequisculpta
                  Alvania cosmia
                  Alvania bartolomensis
                  Alvania keenae
                  Alvania kyskaensis
                  Alvania pedroana
                  Alvania filosa
                  Alvania alaskana
                  Alvania dinora
                  Alvania burrardensis
                  Alvania novarensis
                  Alvania profundicola
                  Alvania crystallina
                  Alvania ogasawarana
                  Alvania sombrerensis
                  Alvania stigmata
                  Alvania subcancellata
                  Alvania townsendi
                  Alvania versoverana
                  Alvania trajectus
                  Alvania isolata
                  Alvania firma
                  Alvania formosita
                  Alvania occidua
                  Alvania strangei
                  Alvania argentea
                  Alvania fenestrata
                  Alvania kowiensis
                  Alvania ima
                  Alvania (Linemera)
                  Alvania filocincta
                  Alvania verconiana
                  Alvania beyersi
                  Alvania deneti
                  Alvania nicobarica
                  Alvania thouinensis
                  Alvania kermadecensis
                  Alvania abrupta
                  Alvania aupouria
                  Alvania bounteyensis
                  Alvania exserta
                  Alvania maclurgi
                  Alvania pinguis
                  Alvania pinguoides
                  Alvania solitaria
                  Alvania venusta
                  Alvania ima
                Amphirissoa
                Benthonella
                Benthonellania
                Boreocingula
                Botryphallus
                Cingula
                Crisilla
                Frigidoalvania
                Gofasia
                Manzonia
                Obtusella
                Onoba
                Peringiella
                Plagyostila
                Pseudosetia
                Pusillina
                Rissoa
                Rudolphosetia
                Setia
                Voorwindia
                Ovirissoa
                Powellisetia
                Subonoba
                Tomlinella
                Plagiostyla
                Pontiturboella
                Porosalvania
                Merelina
                Simulamerelina
                Punctulum
                Parashiela
                Lucidestea
                Lironoba
                Attenuata
                Alvinia
                Auriconoba
                Mutiturboella
                Radiata
                Turgidina
                Benzia
                Varisetia
                Haurakia
                Moniziella
                Flemellia
                Striatestea
                Galeodinopsis
            Tornidae
            Adeorbidae
            Caecidae
            Truncatellidae
            Barleeidae
            Anabathridae
            Elachisinidae
            Trochaclididae
            Calopiidae
            Cochliopidae
            Emblandidae
            Epigridae
            Falsicingulidae
            Hydrococcidae
            Barleeiidae
          Stromboidea
          Hipponicoidea
          Crepiduloidea
          Xenophoroidea
          Cypraeoidea
          Heteropoda
          Naticoidea
          Tonnoidea
          Cassoidea
          Rissoacea
          Calyptraeoidea
          Capuloidea
          Vanikoroidea
          Cingulopsoidea
          Pterotracheoidea
          Velutinoidea
          Vermetoidea
          Ficoidea
        Stenoglossa
        Hypsogastropoda
      Patellogastropoda
    Scaphopoda
    Bivalvia
    Monoplacophora
    Solenogastres
    Cephalopoda
    Placophora
    Aculifera
    Conchifera
    Pelecypoda
    Caudofoveata
    Lamellibranchiata
    Conchifera
  Porifera
  Platyhelminthes
  Nematoda
  Annelida
  Nemertina
  Arthropoda
  Ctenophora
  Cnidaria
  Sipuncula
  Echiura
  Pogonophora
  Entoprocta
  Tardigrada
  Phoronida
  Brachiopoda
  Echinodermata
  Hemichordata
  Chordata
  Gastrotricha
  Chaetognatha
  Ectoprocta
  Mesozoa
  Rotifera
  Gnathostomulida
  Acanthocephala
  Cycliophora
  Cephalorhyncha
  Placozoa
  Bryozoa
  Myxozoa
  Sipunculida
  Pentastomida
  Nemertini
Plantae
Fungi
Protozoa
Bacteria
Chromista
Archaea
Viruses
Monera