Click the links to browse through the WoRMS marine species taxonomy.
Animalia
  Mollusca
  Porifera
  Platyhelminthes
  Nematoda
  Annelida
  Nemertina
  Arthropoda
  Ctenophora
  Cnidaria
  Sipuncula
  Echiura
  Pogonophora
  Entoprocta
  Tardigrada
  Phoronida
  Brachiopoda
  Echinodermata
    Crinozoa
    Asterozoa
      Asteroidea
        Velatida
        Platyasterida
        Concentricycloidea
        Euclasteroidea
        Forcipulatacea
        Valvatacea
          Notomyotida
          Paxillosida
          Valvatida
            Asterinidae
            Chaetasteridae
            Goniasteridae
            Odontasteridae
            Ophidiasteridae
              Hacelia
              Narcissia
              Ophidiaster
                Ophidiaster (Hacelia)
                Ophidiaster aurantius
                Ophidiaster canariensis
                Ophidiaster lessonae
                Ophidiaster ophidianus
                Ophidiaster reyssi
                Ophidiaster alexandri
                Ophidiaster bayeri
                Ophidiaster bullisi
                Ophidiaster guildingi
                Ophidiaster robillardi
                Ophidiaster granifer
                Ophidiaster hemprichi
                Ophidiaster leachi
                Ophidiaster squameus
                Ophidiaster purpureus
                Ophidiaster cylindricus
                Ophidiaster duncani
                Ophidiaster cribrarius
                Ophidiaster perrieri
                Ophidiaster pustulatus
                Ophidiaster confertus
                Ophidiaster kermadecensis
                Ophidiaster macknighti
                Ophidiaster agassizi
                Ophidiaster armatus
                Ophidiaster easterensis
                Ophidiaster helicostichus
                Ophidiaster lorioli
                Ophidiaster ludwigi
                Ophidiaster perplexus
                Ophidiaster rhabdotus
                Ophidiaster aequalis
                Ophidiaster asperulus
                Ophidiaster attenuatus
                Ophidiaster bicolor
                Ophidiaster campbelli
                Ophidiaster chinensis
                Ophidiaster clathratus
                Ophidiaster colombiae
                Ophidiaster columbiae
                Ophidiaster crassa
                Ophidiaster diplax
                Ophidiaster dubiosus
                Ophidiaster echinulatus
                Ophidiaster ehrenbergi
                Ophidiaster flaccidus
                Ophidiaster floridae
                Ophidiaster fuscus
                Ophidiaster germani
                Ophidiaster gracilis
                Ophidiaster guildingi
                Ophidiaster hirsutus
                Ophidiaster inarmata
                Ophidiaster irregularis
                Ophidiaster laevigatus
                Ophidiaster leachi
                Ophidiaster linearis
                Ophidiaster lioderma
                Ophidiaster lorioli
                Ophidiaster lymani
                Ophidiaster marmoratus
                Ophidiaster miliaris
                Ophidiaster multiforis
                Ophidiaster ornatus
                Ophidiaster ornithopus
                Ophidiaster pacifica
                Ophidiaster pinguis
                Ophidiaster porosissimus
                Ophidiaster propinquus
                Ophidiaster pusillus
                Ophidiaster pyramidatus
                Ophidiaster pustulatus
                Ophidiaster schismochilus
                Ophidiaster sclerodermus
                Ophidiaster superba
                Ophidiaster suturalis
                Ophidiaster tenellus
                Ophidiaster triseriatus
                Ophidiaster trychnus
                Ophidiaster tuberculatus
                Ophidiaster tumescens
                Ophidiaster vestitus
                Ophidiaster watsoni
                Ophidiaster (Leiaster)
                Ophidiaster (Pharia)
                    Ophidiaster (Pharia) pyramidatus
                Ophidiaster multispinus
                Ophidiaster tuberifer
              Drachmaster
              Copidaster
              Linckia
              Tamaria
              Nardoa
              Cistina
              Ferdina
              Dactylosaster
              Gomophia
              Scytaster
              Leiaster
              Heteronardoa
              Andora
              Dissogenes
              Oneria
              Austrofromia
              Bunaster
              Celerina
              Certonardoa
              Devania
              Paraferdina
              Pharia
              Phataria
              Plenardoa
              Pseudophidiaster
              Sinoferdina
              Acalia
              Mithrodinae
              Chione
              Cribrella
              Lepidaster
              Melia
              Pseudolinckia
            Poraniidae
            Sphaerasteridae
            Solasteridae
            Oreasteridae
            Mithrodiidae
            Asteropseidae
            Ganeriidae
            Archasteridae
            Acanthasteridae
            Asterodiscididae
            Gymnasteriidae
            Leilasteridae
            Podosphaerasteridae
            Pentopliidae
            Valvasteridae
            Linckiidae
            Gnathasteridae
            Asteropidae
        Spinulosacea
      Ophiuroidea
      Stelleroidea
    Echinozoa
  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