Click the links to browse through the WoRMS marine species taxonomy.
Animalia
  Mollusca
  Porifera
  Platyhelminthes
  Nematoda
  Annelida
  Nemertina
  Arthropoda
    Crustacea
      Remipedia
      Branchiopoda
      Maxillopoda
        Mystacocarida
        Copepoda
          Progymnoplea
          Neocopepoda
            Gymnoplea
              Calanoida
                Acartiidae
                Aetideidae
                Arietellidae
                Augaptilidae
                Bathypontiidae
                Calanidae
                Candaciidae
                Centropagidae
                Clausocalanidae
                Diaixidae
                Discoidae
                Eucalanidae
                Euchaetidae
                Heterorhabdidae
                Lucicutiidae
                Mecynoceridae
                Megacalanidae
                Mesaiokeratidae
                Metridinidae
                Paracalanidae
                Parapontellidae
                Phaennidae
                Phyllopodidae
                Pontellidae
                  Anomalocera
                  Calanopia
                  Labidocera
                    Labidocera acuta
                    Labidocera acutifrons
                    Labidocera aestiva
                    Labidocera brunescens
                        Labidocera brunescens dilzettoi
                    Labidocera detruncata
                    Labidocera kroyeri
                    Labidocera madurae
                    Labidocera nerii
                    Labidocera orsinii
                    Labidocera pavo
                    Labidocera wollastoni
                    Labidocera amphrites
                    Labidocera carpentariensis
                    Labidocera minuta
                    Labidocera papuensis
                    Labidocera pectinata
                    Labidocera laevidentata
                    Labidocera moretoni
                    Labidocera antiguae
                    Labidocera barbadiensis
                    Labidocera barbudae
                    Labidocera bataviae
                    Labidocera bengalensis
                    Labidocera brasiliensis
                    Labidocera caudata
                    Labidocera cervi
                    Labidocera dakini
                    Labidocera darwini
                    Labidocera diandra
                    Labidocera euchaeta
                    Labidocera farrani
                    Labidocera fluviatilis
                    Labidocera gallensis
                    Labidocera gangetica
                    Labidocera glauca
                    Labidocera jaafari
                    Labidocera japonica
                    Labidocera javaensis
                    Labidocera johnsoni
                    Labidocera jollae
                    Labidocera kolpos
                    Labidocera lubbocki
                    Labidocera mirabilis
                    Labidocera muranoi
                    Labidocera panamae
                    Labidocera pseudacuta
                    Labidocera scotti
                    Labidocera sinilobata
                    Labidocera stylifera
                    Labidocera tasmanica
                    Labidocera trispinosa
                    Labidocera wilsoni
                    Labidocera albatrossi
                    Labidocera bipinnata
                    Labidocera brasiliense
                    Labidocera chubbi
                    Labidocera insolita
                    Labidocera intermedia
                    Labidocera similis
                    Labidocera agilis
                    Labidocera crispata
                    Labidocera darwinii
                    Labidocera exigua
                    Labidocera frivola
                    Labidocera hebes
                    Labidocera magna
                    Labidocera media
                    Labidocera patagoniensis
                    Labidocera rotunda
                    Labidocera setosum
                    Labidocera simplex
                    Labidocera tenuicauda
                    Labidocera rotundifrons
                    Labidocera boxshalli
                  Pontella
                  Pontellina
                  Pontellopsis
                  Epilabidocera
                  Paralabidocera
                  Ivellopsis
                  Aphelura
                  Eupontella
                  Hemipontella
                  Irenaeus
                  Isocope
                  Iva
                  Ivella
                  Ivellina
                  Monachops
                  Monops
                  Pontia
                  Pseudomonops
                  Pseudopontella
                  Pseudopontia
                  Calanops
                Pseudocyclopidae
                Pseudocyclopiidae
                Pseudodiaptomidae
                Ridgewayiidae
                Ryocalanidae
                Scolecitrichidae
                Spinocalanidae
                Stephidae
                Temoridae
                Tharybidae
                Pseudocalanidae
                Calocalanidae
                Nullosetigeridae
                Rhincalanidae
                Kyphocalanidae
                Rostrocalanidae
            Podoplea
          Thaumatopsylloida
        Branchiura
        Tantulocarida
        Thecostraca
        Pentastomida
      Malacostraca
      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