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