Click the links to browse through the WoRMS marine species taxonomy.
Animalia
  Mollusca
  Porifera
    Calcarea
    Hexactinellida
    Homoscleromorpha
    Porifera incertae sedis
    Demospongiae
      Ceractinomorpha
      Tetractinomorpha
      Dendroceratida
      Dictyoceratida
      Halichondrida
      Halisarcida
      Haplosclerida
        Haplosclerina
          Callyspongiidae
          Chalinidae
            Rhaphisia
            Reniera
            Adocia
            Chalina
            Chalinula
            Cladocroce
            Dendroxea
            Haliclona
            Pellinula
            Protoschmidtia
            Rhizoniera
            Tedaniella
            Acervochalina
            Siphocalina
            Orina
            Sigmadocia
            Gellius
              Gellius binarius
              Gellius esperi
              Gellius flagellifera
              Gellius marismedi
              Gellius microsigma
              Gellius ravus
              Gellius rhaphidiophorus
              Gellius tenuisigma
              Gellius uncinatus
              Gellius angulatus
              Gellius laurentinus
              Gellius pilosus
              Gellius rudis
              Gellius carduus
              Gellius cucurbitiformis
              Gellius tylotoxus
              Gellius arcuarius
              Gellius capillifer
              Gellius macrosigma
              Gellius fibrosus
              Gellius truncatus
              Gellius arcofer
              Gellius bidens
              Gellius calyx
              Gellius fimbriatus
              Gellius hartlaubi
              Gellius stylifer
              Gellius forcipatus
              Gellius lacazei
              Gellius microtoxa
              Gellius microxifer
              Gellius amboinensis
              Gellius anatarius
              Gellius arcticus
              Gellius arnesenae
              Gellius borzatii
              Gellius calcineus
              Gellius cellarius
              Gellius centrangulatus
              Gellius ceratina
              Gellius constans
              Gellius digitatus
              Gellius dubius
              Gellius flabelliformis
              Gellius friabilis
              Gellius glaberrimus
              Gellius glacialis
                  Gellius glacialis var. nivea
              Gellius hispidulus
              Gellius intermedius
              Gellius irregularis
              Gellius irregularis
              Gellius laevis
              Gellius latisigmae
              Gellius microsigma
              Gellius panis
              Gellius pedunculatus
              Gellius perforatus
              Gellius petrocalyx
              Gellius phillipensis
              Gellius primitivus
              Gellius proximus
              Gellius pyrrhi
              Gellius regius
              Gellius reptans
              Gellius raphidiophora
              Gellius ridleyi
              Gellius strongylatus
              Gellius subtilis
              Gellius tenellus
              Gellius tener
              Gellius textapatina
              Gellius toxius
              Gellius toxophorus
              Gellius toxotes
              Gellius tremulus
              Gellius tubuloramosus
              Gellius tylotoxa
              Gellius abbreviatus
              Gellius canaliculatus
              Gellius sagittarius
              Gellius vasiformis
              Gellius aculeatus
              Gellius incrustans
              Gellius luridus
              Gellius apertus
              Gellius megastoma
              Gellius petrosioides
              Gellius cymiformis
              Gellius fibulatus
              Gellius bioxeata
              Gellius flagellifer
              Gellius massa
              Gellius massa
              Gellius jugosus
              Gellius couchii
              Gellius robustus
              Gellius gemmuliferus
              Gellius varius
              Gellius imperialis
              Gellius microxea
              Gellius vagabundus
              Gellius edaphus
              Gellius phakellioides
              Gellius benedeni
              Gellius arcoferus
              Gellius jorii
              Gellius infundibuliformis
              Gellius pumiceus
              Gellius porosus
            Phylosiphonia
            Arcesios
            Chalinodendron
            Diplodemia
            Euchalinopsis
            Kallypilidion
            Katiba
            Lessepsia
            Nara
            Neoadocia
            Pellinella
            Prianos
            Reniclona
            Toxadocia
            Veluspa
            Philotia
            Asychis
            Toxiclona
            Halichoclona
            Dendrectilla
            Polysiphonia
          Niphatidae
          Haliclonidae
          Adociidae
          Renierinae
          Gelliadae
          Renieridae
          Gelliidae
          Gelliinae
          Cavochalinidae
          Tubulodigitidae
        Petrosina
      Poecilosclerida
      Verongida
      Astrophorida
      Chondrosida
      Hadromerida
      'Lithistida'
      Spirophorida
      Petrosida
      Nepheliospongida
      Choristida
      Axinellida
      Agelasida
      Demospongiae incertae sedis
      Verticillitida
      Keratosa
      Myxospongiae
      Gummineae
      Verongimorpha
      Tetractinellida
      Democlavia
    Sclerospongiae
    Hyalospongiae
    Calcispongiae
  Platyhelminthes
  Nematoda
  Annelida
  Nemertina
  Arthropoda
  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