Click the links to browse through the WoRMS marine species taxonomy.
Animalia
  Mollusca
  Porifera
  Platyhelminthes
  Nematoda
  Annelida
  Nemertina
  Arthropoda
    Crustacea
    Chelicerata
      Arachnida
        Acarina
          Prostigmata
            Pontarachnidae
            Halacaroidea
              Halacaridae
                  Acarochelopodia
                  Actacarus
                  Anomalohalacarus
                  Copidognathides
                  Copidognathus
                  Agaue
                  Agauides
                  Agauopsis
                    Agauopsis brevipalpus
                    Agauopsis conjuncta
                    Agauopsis hirsuta
                    Agauopsis ibssi
                    Agauopsis marinovi
                    Agauopsis meteoris
                    Agauopsis microrhyncha
                    Agauopsis minor
                    Agauopsis pontica
                    Agauopsis pteropes
                    Agauopsis spinipes
                    Agauopsis tricuspis
                    Agauopsis corallina
                    Agauopsis valida
                    Agauopsis antarctica
                    Agauopsis glacialis
                    Agauopsis mccaini
                    Agauopsis racki
                    Agauopsis tricuspidata
                    Agauopsis bilophus
                    Agauopsis dasyderma
                    Agauopsis itassussensis
                    Agauopsis legionium
                    Agauopsis miliaris
                    Agauopsis obtusa
                    Agauopsis aequilivestita
                    Agauopsis ammodytes
                    Agauopsis arabia
                    Agauopsis arborea
                    Agauopsis arenaria
                    Agauopsis atacamae
                    Agauopsis australiensis
                    Agauopsis bacescui
                    Agauopsis bathyalis
                    Agauopsis benziei
                    Agauopsis bermudensis
                    Agauopsis borealis
                    Agauopsis calidictyota
                    Agauopsis capillosa
                    Agauopsis chelipes
                    Agauopsis collaris
                    Agauopsis costata
                    Agauopsis crassipes
                    Agauopsis cryptorhyncha
                    Agauopsis curvata
                    Agauopsis decorata
                    Agauopsis delicatula
                    Agauopsis denticulata
                    Agauopsis elaborata
                    Agauopsis estuarina
                    Agauopsis exornata
                    Agauopsis felicis
                    Agauopsis fenneri
                    Agauopsis filirostris
                    Agauopsis furcata
                    Agauopsis glabra
                    Agauopsis hamata
                    Agauopsis humilis
                    Agauopsis inflata
                    Agauopsis insularis
                    Agauopsis ivanomorsellii
                    Agauopsis littoralis
                    Agauopsis luxtoni
                    Agauopsis mokari
                    Agauopsis moorea
                    Agauopsis narinosa
                    Agauopsis newelli
                    Agauopsis nonornata
                    Agauopsis novaezelandiae
                    Agauopsis okinavensis
                    Agauopsis ornata
                    Agauopsis ornatella
                    Agauopsis papillata
                    Agauopsis paulensis
                    Agauopsis producta
                    Agauopsis pseudoornata
                    Agauopsis pugio
                    Agauopsis punctata
                    Agauopsis pusilla
                    Agauopsis reticulata
                    Agauopsis ripa
                    Agauopsis robusta
                    Agauopsis rosea
                    Agauopsis similis
                    Agauopsis sordida
                    Agauopsis vinae
                    Agauopsis youngilensis
                    Agauopsis zanzibari
                  Arhodeoporus
                  Atelopsalis
                  Bathyhalacarus
                  Bradyagaue
                  Camactognathus
                  Coloboceras
                  Colobocerasides
                  Halacarellus
                  Halacaropsis
                  Halacarus
                  Parhalixodes
                  Pelacarus
                  Thalassarachna
                  Werthella
                  Lohmannella
                  Scaptognathus
                  Isobactrus
                  Metarhombognathus
                  Rhombognathides
                  Rhombognathus
                  Acaromantis
                  Simognathus
                  Acanthohalacarus
                  Acanthopalpus
                  Mictognathus
                  Leptospathis
                  Acarothrix
                  Arenihalacarus
                  Astacopsiphagus
                  Australacarus
                  Corallihalacarus
                  Enterohalacarus
                  Halacaroides
                  Hamohalacarus
                  Himejacarus
                  Lobohalacarus
                  Parasoldanellonyx
                  Peregrinacarus
                  Phacacrus
                  Pontacarus
                  Porohalacarus
                  Porolohmannella
                  Pseudosoldanellonyx
                  Rhombognathopsis
                  Ropohalacarus
                  Scaptognathides
                  Soldanellonyx
                  Spongihalacarus
                  Stygohalacarus
                  Thalassacarus
                  Thallassopthirius
                  Tropihalacarus
                  Velardoacarus
                  Werthelloides
                  Winlundia
                  Xenohalacarus
                  Halixodes
                  Limnohalacarus
                  Makarovana
        Pseudoscorpiones
        Acari
      Pycnogonida
    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