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 chelipes bocqueti
                        Idotea chelipes mediterranea
                      Idotea emarginata
                      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