| Class SCYPHOMEDUSAE |
| Order SEMAEOSTOMEA |
| Family Pelagiidae |
| Chrysaora Péron & Lesueur, 1810 |
| Chrysaora hysoscella (Linnaeus, 1766) |
| Family Cyaneidae |
| Cyanea Péron & Lesueur, 1810 |
| Cyanea capillata (Linnaeus, 1758) |
| Cyanea lamarckii Péron & Lesueur, 1810 |
| Family Ulmaridae |
| Aurelia Lamarck, 1816 |
| Aurelia aurita (Linnaeus, 1758) |
| Class LEPTOLIDA |
| Order CAPITATA |
| Family Corymorphidae |
| Corymorpha M Sars, 1835 |
| Corymorpha nutans M Sars, 1835 |
| Family Tubulariidae |
| Tubularia Linnaeus, 1758 |
| Tubularia indivisa Linnaeus, 1758 |
| Ectopleura larynx (Ellis & Solander, 1786) |
| Family Corynidae |
| Sarsia Lesson, 1843 |
| Coryne eximia (Allman, 1859) |
| Order FILIFERA |
| Family Eudendriidae |
| Eudendrium Ehrenberg, 1832 |
| Eudendrium annulatum Norman, 1864 |
| Eudendrium arbuscula Wright, 1859 |
| Family Pandeiidae |
| Leuckartiara Hartlaub, 1914 |
| Leuckartiara octona (Fleming, 1823) |
| Family Bougainvilliidae |
| Bougainvillia Lesson, 1830 |
| Bougainvillia muscus (Allman, 1863) |
| Garveia Wright, 1859 |
| Garveia nutans Wright, 1859 |
| Family Hydractiniidae |
| Hydractinia van Beneden, 1843 |
| Hydractinia echinata (Fleming, 1828) |
| Order CONICA |
| Family Lafoeidae |
| Lafoea Lamouroux, 1821 |
| Lafoea dumosa (Fleming, 1828) |
| Family Haleciidae |
| Halecium Oken, 1815 |
| Halecium beanii (Johnston, 1838) |
| Halecium halecinum (Linnaeus, 1758) |
| Halecium muricatum (Ellis & Solander, 1786) |
| Halecium plumosum Hincks, 1868 |
| Family Sertulariidae |
| Abietinaria Kirchenpauer, 1884 |
| Abietinaria abietina (Linnaeus, 1758) |
| Abietinaria filicula (Ellis & Solander, 1786) |
| Amphisbetia L Agassiz, 1862 |
| Amphisbetia operculata (Linnaeus, 1758) |
| Diphasia L Agassiz, 1862 |
| Diphasia alata (Hincks, 1855) |
| Diphasia attenuata (Hincks, 1866) |
| Diphasia fallax (Johnston, 1847) |
| Diphasia nigra (Pallas, 1766) |
| Diphasia margareta (Hassall, 1841) |
| Diphasia rosacea (Linnaeus, 1758) |
| Dynamena Lamouroux, 1812 |
| Dynamena pumila (Linnaeus, 1758) |
| Hydrallmania Hincks, 1868 |
| Hydrallmania falcata (Linnaeus, 1758) |
| Sertularella Gray, 1848 |
| Sertularella gaudichaudi (Lamouroux, 1824) |
| Sertularella fusiformis (Hincks, 1861) |
| Sertularella gayi (Lamouroux, 1821) |
| Sertularella polyzonias (Linnaeus, 1758) |
| Sertularella rugosa (Linnaeus, 1758) |
| Sertularella tenella (Alder, 1856) |
| Sertularia Linnaeus, 1758 |
| Sertularia argentea Linnaeus, 1758 |
| Symplectoscyphus Marktanner-Turneretscher, 1890 |
| Symplectoscyphus tricuspidatus (Alder, 1856) |
| Tamarisca Kudelin, 1914 |
| Tamarisca tamarisca (Linnaeus, 1758) |
| Thuiaria Fleming, 1828 |
| Thuiaria articulata (Pallas, 1766) |
| Thuiaria thuja (Linnaeus, 1758) |
| Family Plumulariidae |
| Antennella Allman, 1877 |
| Antennella secundaria (Gmelin, 1791) |
| Halopteris Allman, 1877 |
| Halopteris catharina (Johnston, 1833) |
| Kirchenpaueria Jickeli, 1883 |
| Kirchenpaueria pinnata (Linnaeus, 1758) |
| Kirchenpaueria similis (Hincks, 1861) |
| Nemertesia Lamouroux, 1812 |
| Nemertesia antennina (Linnaeus, 1758) |
| Nemertesia ramosa Lamouroux, 1816 |
| Plumularia Lamarck, 1816 |
| Plumularia setacea (Linnaeus, 1758) |
| Polyplumaria G O Sars, 1874 |
| Polyplumaria flabellata G O Sars, 1874 |
| Schizotricha frutescens (Ellis & Solander, 1786) |
| Family Aglaopheniidae |
| Aglaophenia Lamouroux, 1812 |
| Aglaophenia kirchenpaueri (Heller, 1868) |
| Aglaophenia pluma (Linnaeus, 1758) |
| Aglaophenia tubulifera (Hincks, 1861) |
| Gymnangium Hincks, 1874 |
| Gymnangium montagui (Billard, 1912) |
| Lytocarpia Kirchenpauer, 1872 |
| Lytocarpia myriophyllum (Linnaeus, 1758) |
| Order PROBOSCOIDA |
| Family Campanulariidae |
| Rhizocaulus Stechow, 1919 |
| Rhizocaulus verticillatus (Linnaeus, 1758) |
| Clytia Lamouroux, 1812 |
| Clytia hemisphaerica (Linnaeus, 1767) |
| Gonothyraea Allman, 1864 |
| Gonothyraea loveni (Allman, 1859) |
| Obelia Péron & Lesueur, 1810 |
| Obelia dichotoma (Linnaeus, 1758) |
| Obelia geniculata (Linnaeus, 1758) |
| Class SIPHONOPHORA |
| Order PHYSONECTA |
| Family Agalmatidae |
| Nanomia A Agassiz, 1865 |
| Nanomia cara A Agassiz, 1865 |
| Class OCTOCORALLIA |
| Order CALYCOPHORA |
| Family Cornulariidae |
| Cornularia Lamarck, 1816 |
| Cervera cf. atlantica (Johnson, 1861) |
| Family Clavulariidae |
| Sarcodictyon Forbes in Johnston, 1847 |
| Sarcodictyon catenatum Forbes, 1847 |
| Order ALCYONACEA |
| Family Alcyoniidae |
| Alcyonium Linnaeus, 1758 |
| Alcyonium digitatum Linnaeus, 1758 |
| Alcyonium glomeratum (Hassall, 1843) |
| Parerythropodium Kükenthal, 1916 |
| Alcyonium hibernicum (Renouf, 1931) |
| Order GORGONACEA |
| Family Paramuriceidae |
| Swiftia Duchassaing & Michelotti, 1864 |
| Swiftia pallida Madsen, 1970 |
| Family Plexauridae |
| Eunicella Verrill, 1869 |
| Eunicella verrucosa (Pallas, 1766) |
| Order PENNATULACEA |
| Family Funiculinidae |
| Funiculina Lamarck, 1816 |
| Funiculina quadrangularis (Pallas, 1766) |
| Family Virgulariidae |
| Virgularia Lamarck, 1816 |
| Virgularia mirabilis (O F Müller, 1776) |
| Family Pennatulidae |
| Pennatula Linnaeus, 1758 |
| Pennatula phosphorea Linnaeus, 1758 |
| Class HEXACORALLIA |
| Order CERIANTHARIA |
| Family Cerianthidae |
| Cerianthus delle Chiaje, 1830 |
| Cerianthus lloydii Gosse, 1859 |
| Pachycerianthus Roule, 1904 |
| Pachycerianthus multiplicatus Carlgren, 1912 |
| Pachycerianthus indet |
| Family Arachnactidae |
| Arachnanthus Carlgren, 1912 |
| Arachnanthus sarsi Carlgren, 1912 |
| Order ZOANTHARIA |
| Family Epizoanthidae |
| Epizoanthus J E Gray, 1867 |
| Epizoanthus couchii (Johnston, in Couch, 1844) |
| Family Parazoanthidae |
| Parazoanthus Haddon & Shackleton, 1891 |
| Parazoanthus anguicomus (Norman, 1868) |
| Parazoanthus axinellae (Schmidt, 1862) |
| Isozoanthus Carlgren, 1905 |
| Isozoanthus sulcatus (Gosse, 1859) |
| Order ACTINIARIA |
| Family Gonactiniidae |
| Gonactinia M Sars, 1850 |
| Gonactinia prolifera (M Sars, 1835) |
| Protanthea Carlgren, 1891 |
| Protanthea simplex Carlgren, 1891 |
| Family Actiniidae |
| Actinia Linnaeus, 1767 |
| Actinia equina (Linnaeus, 1758) |
| Actinia fragacea Tugwell, 1856 |
| Anemonia Risso, 1826 |
| Anemonia viridis (Forsskċl, 1775) |
| Bolocera Gosse, 1859 |
| Bolocera tuediae (Johnston, 1832) |
| Urticina Ehrenberg, 1834 |
| Urticina eques (Gosse, 1859) |
| Urticina felina (Linnaeus, 1761) |
| Aulactinia Verrill, 1864 |
| Aulactinia verrucosa (Pennant, 1777) |
| Anthopleura Duchassaing & Michelotti, 1861 |
| Anthopleura ballii (Cocks, 1850) |
| Anthopleura thallia (Gosse, 1854) |
| Family Aurelianiidae |
| Aureliania Gosse, 1859 |
| Capnea sanguinea Forbes, 1841 |
| Family Actinostolidae |
| Stomphia Gosse, 1859 |
| Stomphia coccinea (O F Müller, 1776) |
| Family Aiptasiidae |
| Aiptasia Gosse, 1858 |
| Aiptasia couchii Gosse, 1858 |
| Aiptasiogeton Schmidt, 1972 |
| Aiptasiogeton pellucidus (Hollard, 1848) |
| Family Diadumenidae |
| Diadumene Stephenson, 1920 |
| Diadumene cincta Stephenson, 1925 |
| Haliplanella Hand, 1956 |
| Diadumene lineata (Verrill, 1869) |
| Family Metridiidae |
| Metridium de Blainville, 1824 |
| Metridium dianthus (Ellis, 1768) |
| Family Sagartiidae |
| Sagartia Gosse, 1855 |
| Sagartia elegans (Dalyell, 1848) |
| Sagartia ornata (Holdsworth, 1855) |
| Sagartia troglodytes (Price in Johnston, 1847) |
| Cereus Milne-Edwards, 1857 |
| Cereus pedunculatus (Pennant, 1777) |
| Actinothoe Fischer, 1890 |
| Actinothoe sphyrodeta (Gosse, 1858) |
| Sagartiogeton Carlgren, 1924 |
| Sagartiogeton laceratus (Dalyell, 1848) |
| Sagartiogeton undatus (O F Müller, 1788) |
| Phellia Gosse, 1858 |
| Phellia gausapata Gosse, 1858 |
| Family Hormathiidae |
| Hormathia Gosse, 1859 |
| Hormathia coronata (Gosse, 1858) |
| Hormathia digitata (O F Müller, 1776) |
| Hormathia nodosa (Fabricius, 1780) |
| Cataphellia Stephenson, 1929 |
| Cataphellia brodricii (Gosse, 1859) |
| Paraphellia Haddon, 1889 |
| Paraphellia expansa (Haddon, 1886) |
| Actinauge Verrill, 1883 |
| Actinauge richardi (Marion, 1882) |
| Calliactis Verrill, 1869 |
| Calliactis parasitica (Couch, 1842) |
| Adamsia Forbes, 1840 |
| Adamsia palliata (O. F. Müller, 1776) |
| Amphianthus Hertwig, 1882 |
| Amphianthus dohrnii (von Koch, 1878) |
| Family Halcampoididae |
| Halcampoides Danielssen, 1890 |
| Halcampoides elongatus Carlgren in Stephens, 1912 |
| Family Haloclavidae |
| Anemonactis Andres, 1880 |
| Anemonactis mazeli (Jourdan, 1880) |
| Mesacmaea Andres, 1883 |
| Mesacmaea mitchellii (Gosse, 1853) |
| Peachia Gosse, 1855 |
| Peachia cylindrica (Reid, 1848) |
| Family Halcampidae |
| Halcampa Gosse, 1858 |
| Halcampa chrysanthellum (Peach, in Johnston, 1847) |
| Family Edwardsiidae |
| Nematostella Stephenson, 1935 |
| Nematostella vectensis Stephenson, 1935 |
| Edwardsiella Andres, 1883 |
| Edwardsiella carnea (Gosse, 1856) |
| Edwardsia de Quatrefages, 1841 |
| Edwardsia claparedii (Panceri, 1869) |
| Edwardsia delapiae Carlgren & Stephenson, 1928 |
| Edwardsia ivelli Manuel, 1975 |
| Edwardsia timida de Quatrefages, 1842 |
| Scolanthus Gosse, 1853 |
| Scolanthus callimorphus Gosse, 1853 |
| Order CORALLIMORPHARIA |
| Family Corallimorphidae |
| Corynactis Allman, 1846 |
| Corynactis viridis Allman, 1846 |
| Order SCLERACTINIA |
| Family Caryophylliidae |
| Caryophyllia Lamarck, 1801 |
| Caryophyllia inornata Duncan, 1878 |
| Caryophyllia smithii Stokes & Broderip, 1828 |
| Hoplangia Gosse, 1859 |
| Hoplangia durotrix Gosse, 1860 |
| Family Dendrophylliidae |
| Balanophyllia Wood, 1844 |
| Balanophyllia regia Gosse, 1853 |
| Leptopsammia Milne-Edwards & Haime, 1848 |
| Leptopsammia pruvoti Lacaze-Duthiers, 1897 |