Click the links to browse through the WoRMS marine species taxonomy.
Animalia
  Mollusca
  Porifera
  Platyhelminthes
  Nematoda
  Annelida
  Nemertina
  Arthropoda
    Crustacea
      Remipedia
      Branchiopoda
      Maxillopoda
      Malacostraca
        Eumalacostraca
          Eucarida
          Peracarida
            Isopoda
              Anthuridea
              Asellota
              Epicaridea
              Flabellifera
              Gnathiidea
              Microcerberidea
              Valvifera
                Arcturidae
                Chaetiliidae
                Holognathidae
                Idoteidae
                  Idotea
                    Idotea balthica
                    Idotea brevicornis
                    Idotea carinata
                    Idotea chelipes
                    Idotea emarginata
                        Idotea emarginata massiliensis
                    Idotea granulosa
                    Idotea hectica
                    Idotea linearis
                    Idotea metallica
                    Idotea neglecta
                    Idotea ostroumovi
                    Idotea pelagica
                    Idotea whymperi
                    Idotea acuminatum
                    Idotea viridis
                    Idotea phosphorea
                    Idotea ziczac
                    Idotea tricuspidata
                    Idotea aleutica
                    Idotea brevicauda
                    Idotea brevicorna
                    Idotea danai
                    Idotea delfini
                    Idotea duplicata
                    Idotea fewkesi
                    Idotea gurjanovae
                    Idotea indica
                    Idotea obscura
                    Idotea ochotensis
                    Idotea orientalis
                    Idotea rufescens
                    Idotea spasskii
                    Idotea urotoma
                    Idotea viridissima
                    Idotea pulchra
                    Idotea rugulosa
                    Idotea coeca
                    Idotea montereyensis
                    Idotea peronii
                    Idotea stricta
                    Idotea lichtensteini
                    Idotea tuftsii
                    Idotea sabini
                    Idotea stewarti
                    Idotea rostrata
                    Idotea montosa
                    Idotea triloba
                    Idotea lobata
                    Idotea bicuspida
                    Idotea consolidata
                    Idotea hirtipes
                    Idotea marmorata
                    Idotea nodulosa
                    Idotea elongata
                    Idotea resecata
                    Idotea baltica
                    Idotea affinis
                    Idotea algirica
                    Idotea angusta
                    Idotea angustata
                    Idotea angustata
                    Idotea annulata
                    Idotea argentea
                    Idotea atrata
                    Idotea basteri
                    Idotea caudacuta
                    Idotea cretaria
                    Idotea derjugini
                    Idotea diodon
                    Idotea distincta
                    Idotea edwardsii
                    Idotea excavata
                    Idotea excisa
                    Idotea gracillima
                    Idotea hirtipes
                    Idotea japonica
                    Idotea lalandii
                    Idotea latreillei
                    Idotea margaritacea
                    Idotea media
                    Idotea muricata
                    Idotea nitida
                    Idotea oregonensis
                    Idotea peloponesiaca
                    Idotea pontica
                    Idotea (Stenosoma)
                    Idotea rectilinea
                    Idotea rectilineata
                    Idotea robusta
                    Idotea rotundicauda
                    Idotea rugosa
                    Idotea salinarium
                    Idotea sarsi
                    Idotea sexlineata
                    Idotea slabberi
                    Idotea stenops
                    Idotea stephenseni
                    Idotea taurica
                    Idotea tridentata
                    Idotea variegata
                    Idotea festiva
                    Idotea whitei
                  Paridotea
                  Synidotea
                  Synisoma
                  Zenobiana
                  Edotia
                  Erichsonella
                  Glyptidotea
                  Batedotea
                  Cleantiella
                  Colidotea
                  Crabyzos
                  Engidotea
                  Euidotea
                  Eusymmerus
                  Lyidotea
                  Moplisa
                  Parasymmerus
                  Pentias
                  Pentidotea
                  Platidotea
                  Synischia
                  Idoteidae incertae sedis
                  Stenosoma
                  Chaetilinae
                  Glyptonotinae
                  Mesidoteinae
                  Macrochiridotheinae
                  Parachiridoteinae
                  Erichsonia
                  Idotaea
                  Idothea
                  Zenobia
                  Miratidotea
                  Desmarestia
                  Epelys
                  Edotea
                  Tropedotea
                  Ronalea
                  Gonotus
                  Barnardidotea
                  Leptosoma
                Austrarcturellidae
                Antarcturidae
                Holidoteidae
                Pseudidotheidae
                Rectarcturidae
                Astacillidae
                Idotheidae
                Arcturididae
                Xenarcturidae
                Amesopodidae
              Oniscidea
            Tanaidacea
            Amphipoda
            Cumacea
            Thermosbaenacea
            Mysidacea
            Mysida
            Lophogastrida
            Anisopoda
        Hoplocarida
      Ostracoda
      Pentastomata
    Chelicerata
    Myriapoda
    Hexapoda
  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