Between brackets is the number of accepted marine extant species
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Shows the number of accepted marine extant species within the taxon
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- Biota (247 578)
- Kingdom Animalia (211 542)
- Subkingdom Animalia incertae sedis
- Subkingdom Metazoa accepted as Animalia
- Phylum Acanthocephala (516)
- Phylum Annelida (14 107)
- Phylum Arthropoda (59 758)
- Phylum Aschelminthes
- Phylum Brachiopoda (408)
- Phylum Bryozoa (6 545)
- Phylum Cephalorhyncha
- Phylum Chaetognatha (132)
- Phylum Chordata (24 096)
- Phylum Cnidaria (12 578)
- Subphylum Anthozoa (7 266)
- Class Anthozoa incertae sedis
- Class Hexacorallia (3 660)
- Class Octocorallia (3 606)
- Order Alcyonacea accepted as Octocorallia
- Order Gorgonacea accepted as Octocorallia
- Order Helioporacea accepted as Helioporidae Moseley, 1876
- Order Malacalcyonacea (2 418)
- Suborder Alcyoniina accepted as Malacalcyonacea
- Suborder Holaxonia accepted as Malacalcyonacea
- Suborder Protoalcyonaria accepted as Malacalcyonacea
- Suborder Scleraxonia accepted as Malacalcyonacea
- Suborder Stolonifera accepted as Malacalcyonacea
- Superfamily Siphonogorgiacea Kölliker, 1875 accepted as Nidaliidae Gray, 1869
- Family Acanthoaxiidae van Ofwegen & McFadden, 2010 (2)
- Family Acanthogorgiidae Gray, 1859 (346)
- Family Acrophytidae McFadden & van Ofwegen, 2017 (8)
- Family Acrossotidae Bourne, 1914 (6)
- Family Alcyoniidae Lamouroux, 1812 (116)
- Family Allogorgiidae Verrill, 1928 accepted as Plexauridae Gray, 1859
- Family Anelladae Gray, 1859 accepted as Subergorgiidae Gray, 1859
- Family Antheliadae Gray, 1869 accepted as Xeniidae Ehrenberg, 1828
- Family Anthogorgiidae McFadden, van Ofwegen & Quattrini, 2022 accepted as Anthogorgiidae McFadden, van Ofwegen & Quattrini, 2024
- Family Anthogorgiidae McFadden, van Ofwegen & Quattrini, 2024 (36)
- Family Anthothelidae Broch, 1916 accepted as Alcyoniidae Lamouroux, 1812
- Family Aquaumbridae Breedy, van Ofwegen & Vargas, 2012 (2)
- Family Arulidae McFadden & van Ofwegen, 2012 (5)
- Family Astrogorgiidae McFadden, van Ofwegen & Quattrini, 2022 accepted as Astrogorgiidae McFadden, van Ofwegen & Quattrini, 2024
- Family Astrogorgiidae McFadden, van Ofwegen & Quattrini, 2024 (32)
- Family Bellonelladae Gray, 1869 accepted as Alcyoniidae Lamouroux, 1812
- Family Capnellidae McFadden, van Ofwegen & Quattrini, 2022 accepted as Capnellidae McFadden, van Ofwegen & Quattrini, 2024
- Family Capnellidae McFadden, van Ofwegen & Quattrini, 2024 (33)
- Family Carijoidae McFadden, van Ofwegen & Quattrini, 2022 accepted as Carijoidae McFadden, van Ofwegen & Quattrini, 2024
- Family Carijoidae McFadden, van Ofwegen & Quattrini, 2024 (10)
- Family Ceratocaulidae López-González, San Martín-Payá & Williams, 2024 (1)
- Family Cerveridae McFadden, van Ofwegen & Quattrini, 2022 accepted as Cerveridae McFadden, van Ofwegen & Quattrini, 2024
- Family Cerveridae McFadden, van Ofwegen & Quattrini, 2024 (5)
- Family Cladiellidae McFadden, van Ofwegen & Quattrini, 2022 accepted as Cladiellidae McFadden, van Ofwegen & Quattrini, 2024
- Family Cladiellidae McFadden, van Ofwegen & Quattrini, 2024 (84)
- Family Clavulariidae Hickson, 1894 (72)
- Family Coelogorgiidae Bourne, 1900 (1)
- Family Corymbophytidae McFadden & van Ofwegen, 2017 (1)
- Family Discophytidae McFadden, van Ofwegen & Quattrini, 2022 accepted as Discophytidae McFadden, van Ofwegen & Quattrini, 2024
- Family Discophytidae McFadden, van Ofwegen & Quattrini, 2024 (1)
- Family Euniceidae Kölliker, 1865 accepted as Plexauridae Gray, 1859
- Family Eunicellidae McFadden, van Ofwegen & Quattrini, 2022 accepted as Eunicellidae McFadden, van Ofwegen & Quattrini, 2024
- Family Eunicellidae McFadden, van Ofwegen & Quattrini, 2024 (33)
- Family Euplexauridae McFadden, van Ofwegen & Quattrini, 2022 accepted as Euplexauridae McFadden, van Ofwegen & Quattrini, 2024
- Family Euplexauridae McFadden, van Ofwegen & Quattrini, 2024 (34)
- Family Gorgoniidae Lamouroux, 1812 (209)
- Genus Adelogorgia Bayer, 1958 (5)
- Genus Antillogorgia Bayer, 1951 (11)
- Genus Asperogorgia Stiasny, 1943 accepted as Leptogorgia Milne Edwards, 1857
- Genus Busella Gray, 1870 accepted as Gorgonia Linnaeus, 1758
- Genus Callistephanus Wright & Studer, 1889 (7)
- Genus Chromoplexaura Williams, 2013 (2)
- Genus Danielssenia Grieg, 1887 accepted as Callistephanus Wright & Studer, 1889
- Genus Eugorgia Verrill, 1868 (17)
- Genus Gorgonia Linnaeus, 1758 (9)
- Genus Hymenogorgia Valenciennes, 1855 accepted as Phyllogorgia Milne Edwards & Haime, 1850
- Genus Leptogorgia Milne Edwards, 1857 (98)
- Genus Litigorgia Verrill, 1868 accepted as Leptogorgia Milne Edwards, 1857
- Genus Lophogorgia Milne Edwards & Haime, 1857 accepted as Leptogorgia Milne Edwards, 1857
- Genus Muritella Gray, 1870 accepted as Psammogorgia Verrill, 1868
- Genus Olindagorgia Bayer, 1981 (1)
- Genus Pacifigorgia Bayer, 1951 (37)
- Genus Phycogorgia Milne Edwards & Haime, 1850 (1)
- Genus Phyllogorgia Milne Edwards & Haime, 1850 (1)
- Genus Platycaulos Wright & Studer, 1889 accepted as Swiftia Duchassaing & Michelotti, 1864
- Genus Psammogorgia Verrill, 1868 (11)
- Genus Pseudopterogorgia Kükenthal, 1919 (8)
- Genus Rhipidigorgia Valenciennes, 1855 accepted as Gorgonia Linnaeus, 1758
- Genus Rhipidogorgia Valenciennes, 1855 accepted as Gorgonia Linnaeus, 1758
- Genus Rhizalcyon Bayer, 1995 accepted as Gorgonia Linnaeus, 1758 (1)
- Family Hypnogorgiadae Gray, 1870 accepted as Plexauridae Gray, 1859
- Family Incrustatidae McFadden, van Ofwegen & Quattrini, 2022 accepted as Incrustatidae McFadden, van Ofwegen & Quattrini, 2024
- Family Incrustatidae McFadden, van Ofwegen & Quattrini, 2024 (6)
- Family Isidae Lamouroux, 1812 accepted as Isididae Lamouroux, 1812
- Family Isideae Lamouroux, 1812 accepted as Isididae Lamouroux, 1812
- Family Isididae Lamouroux, 1812 (11)
- Family Keroeididae Kinoshita, 1910 (6)
- Family Lemnaliidae McFadden, van Ofwegen & Quattrini, 2022 accepted as Lemnaliidae Gray, 1869
- Family Lemnaliidae Gray, 1869 (45)
- Family Leptophytidae McFadden & van Ofwegen, 2017 (7)
- Family Lobulariadae Gray, 1869 accepted as Alcyoniidae Lamouroux, 1812
- Family Malacacanthidae McFadden, van Ofwegen & Quattrini, 2022 accepted as Malacacanthidae McFadden, van Ofwegen & Quattrini, 2024
- Family Malacacanthidae McFadden, van Ofwegen & Quattrini, 2024 (1)
- Family Malacalcyonacea incertae sedis (37)
- Family Melithaeadae Gray, 1870 accepted as Melithaeidae Gray, 1870
- Family Melithaeidae Gray, 1870 (136)
- Family Melitodidae Verrill, 1869 accepted as Melithaeidae Gray, 1870
- Family Mopselladae Gray, 1870 accepted as Melithaeidae Gray, 1870
- Family Nephtheidae Gray, 1862 (439)
- Family Nephthyigorgiidae McFadden, van Ofwegen & Quattrini, 2022 accepted as Nephthyigorgiidae McFadden, van Ofwegen & Quattrini, 2024
- Family Nephthyigorgiidae McFadden, van Ofwegen & Quattrini, 2024 (4)
- Family Nidaliidae Gray, 1869 (22)
- Family Paralcyoniidae Gray, 1869 (15)
- Family Paramuriceidae Bayer, 1956 accepted as Acanthogorgiidae Gray, 1859
- Family Plexaurellidae Verrill, 1912 (8)
- Family Plexauridae Gray, 1859 (90)
- Family Pseudonephtheidae McFadden, van Ofwegen & Quattrini, 2022 accepted as Pseudonephtheidae McFadden, van Ofwegen & Quattrini, 2024
- Family Pseudonephtheidae McFadden, van Ofwegen & Quattrini, 2024 (1)
- Family Pterogorgiidae McFadden, van Ofwegen & Quattrini, 2022 accepted as Pterogorgiidae McFadden, van Ofwegen & Quattrini, 2024
- Family Pterogorgiidae McFadden, van Ofwegen & Quattrini, 2024 (23)
- Family Rosgorgiidae McFadden, van Ofwegen & Quattrini, 2022 accepted as Rosgorgiidae McFadden, van Ofwegen & Quattrini, 2024
- Family Rosgorgiidae McFadden, van Ofwegen & Quattrini, 2024 (1)
- Family Sarcophytidae McFadden, van Ofwegen & Quattrini, 2022 accepted as Sarcophytidae Gray, 1869
- Family Sarcophytidae Gray, 1869 (288)
- Family Scleracidae McFadden, van Ofwegen & Quattrini, 2022 accepted as Scleracidae McFadden, van Ofwegen & Quattrini, 2024
- Family Scleracidae McFadden, van Ofwegen & Quattrini, 2024 (2)
- Family Sinulariidae McFadden, van Ofwegen & Quattrini, 2022 accepted as Sinulariidae McFadden, van Ofwegen & Quattrini, 2024
- Family Sinulariidae McFadden, van Ofwegen & Quattrini, 2024 (1)
- Family Siphonogorgiidae Kölliker, 1874 (54)
- Family Skamnariidae McFadden, van Ofwegen & Quattrini, 2022 accepted as Skamnariidae McFadden, van Ofwegen & Quattrini, 2024
- Family Skamnariidae McFadden, van Ofwegen & Quattrini, 2024 (1)
- Family Spoggodidae Gray, 1869 accepted as Nephtheidae Gray, 1862
- Family Subergorgiidae Gray, 1859 (11)
- Family Sympodiadae Gray, 1869 accepted as Xeniidae Ehrenberg, 1828
- Family Taiaroidae Bayer & Muzik, 1976 (1)
- Family Tubiporidae Ehrenberg, 1828 (33)
- Family Victorgorgiidae Moore, Alderslade & Miller, 2017 (10)
- Family Viguieriotidae accepted as Paralcyoniidae Gray, 1869
- Family Xeniidae Ehrenberg, 1828 (128)
- Order Octocorallia incertae sedis (57)
- Order Pennatulacea accepted as Pennatuloidea Ehrenberg, 1834
- Order Scleralcyonacea (1 131)
- Class Zoantharia accepted as Hexacorallia
- Subphylum Cnidaria incertae sedis (1)
- Subphylum Endocnidozoa (1 151)
- Subphylum Medusozoa (4 160)
- Phylum Ctenophora (184)
- Phylum Cycliophora (2)
- Phylum Dicyemida (122)
- Phylum Echinodermata (7 646)
- Phylum Ectoprocta accepted as Bryozoa
- Phylum Entoprocta (202)
- Phylum Gastrotricha (523)
- Phylum Gnathostomulida (100)
- Phylum Hemichordata (137)
- Phylum Kinorhyncha (348)
- Phylum Loricifera (46)
- Phylum Mesozoa accepted as Dicyemida
- Phylum Mollusca (52 040)
- Phylum Nematoda (6 758)
- Phylum Nematomorpha (5)
- Phylum Nemertea (1 335)
- Phylum Nemertina represented as Nemertea
- Phylum Nemertini accepted as Nemertea
- Phylum Orthonectida (24)
- Phylum Pentastomida accepted as Pentastomida
- Phylum Phoronida (13)
- Phylum Placozoa (4)
- Phylum Platyhelminthes (13 497)
- Phylum Pogonophora accepted as Siboglinidae Caullery, 1914
- Phylum Porifera (9 475)
- Phylum Priapulida (22)
- Phylum Rotatoria accepted as Rotifera
- Phylum Rotifera (219)
- Phylum Sipunculida accepted as Sipuncula
- Phylum Tardigrada (263)
- Phylum Xenacoelomorpha (437)
- Kingdom Archaea (117)
- Kingdom Bacteria (2 223)
- Kingdom Chromista (20 791)
- Kingdom Fungi (1 432)
- Kingdom Monera represented as Bacteria
- Kingdom Plantae (10 581)
- Kingdom Protozoa (766)
- Kingdom Viruses (115)
