Abietinaria Kirchenpauer, 1884 (basis of record)
Abietinaria abietina (Linnaeus, 1758) (basis of record)
Abietinaria filicula (Ellis & Solander, 1786) (basis of record)
Acaulis Stimpson, 1853 (basis of record)
Acaulis primarius Stimpson, 1853 (basis of record)
Acryptolaria Norman, 1875 (basis of record)
Acryptolaria conferta (Allman, 1877) (basis of record)
Acryptolaria crassicaulis (Allman, 1888) (basis of record)
Acryptolaria longitheca (Allman, 1877) (basis of record)
Aegina Eschscholtz, 1829 (basis of record)
Aegina citrea Eschscholtz, 1829 (basis of record)
Aegina rosea Eschscholtz, 1829 (basis of record)
Aeginopsis Brandt, 1835 (basis of record)
Aeginopsis laurentii Brandt, 1838 (basis of record)
Aeginura Haeckel, 1879 (basis of record)
Aeginura grimaldii Maas, 1904 (basis of record)
Aequorea Péron & Lesueur, 1810 (basis of record)
Aequorea aequorea (Forsskål, 1775) accepted as Aequorea forskalea Péron & Lesueur, 1810 (basis of record)
Aequorea forskalea Péron & Lesueur, 1810 (basis of record)
Aequorea macrodactyla (Brandt, 1835) (basis of record)
Aequorea pensilis (Haeckel, 1879) (basis of record)
Aglantha Haeckel, 1879 (basis of record)
Aglantha digitale (O. F. Müller, 1776) (basis of record)
Aglaophenia Lamouroux, 1812 (basis of record)
Aglaophenia kirchenpaueri (Heller, 1868) (basis of record)
Aglaophenia latecarinata Allman, 1877 (basis of record)
Aglaura Péron & Lesueur, 1810 (basis of record)
Aglaura hemistoma Péron & Lesueur, 1810 (basis of record)
Amphinema Haeckel, 1879 (basis of record)
Amphinema biscayana (Browne, 1907) (basis of record)
Amphinema rubrum (Kramp, 1957) (basis of record)
Amphisbetia L. Agassiz, 1862 (basis of record)
Antennella Allman, 1877 (basis of record)
Arctapodema Dall, 1907 (basis of record)
Arctapodema ampla (Vanhöffen, 1902) (basis of record)
Bimeria Wright, 1859 (basis of record)
Bonneviella Broch, 1909 (basis of record)
Boreohydra Westblad, 1937 accepted as Plotocnide Wagner, 1885 (basis of record)
Botrynema Browne, 1908 (basis of record)
Botrynema brucei Browne, 1908 (basis of record)
Botrynema ellinorae (Hartlaub, 1909) accepted as Botrynema brucei ellinorae (Hartlaub, 1909) (basis of record)
Bougainvillia Lesson, 1830 (basis of record)
Branchiocerianthus Mark, 1898 (basis of record)
Bythotiara Günther, 1903 (basis of record)
Bythotiara murrayi Günther, 1903 (basis of record)
Calycopsis Fewkes, 1882 (basis of record)
Campanularia Lamarck, 1816 (basis of record)
Candelabrum de Blainville, 1830 (basis of record)
Candelabrum phrygium (Fabricius, 1780) (basis of record)
Candelabrum serpentarii Segonzac & Vervoort, 1995 (basis of record)
Cladocarpus Allman, 1874 (basis of record)
Cladocarpus cartieri Bedot, 1921 accepted as Aglaophenopsis cartieri (Bedot, 1921) (basis of record)
Cladocarpus formosus Allman, 1877 (basis of record)
Cladocarpus sigma (Allman, 1877) (basis of record)
Clytia Lamouroux, 1812 (basis of record)
Clytia gracilis (M. Sars, 1851) (basis of record)
Clytia hemisphaerica (Linnaeus, 1767) (basis of record)
Clytia linearis (Thorneley, 1900) (basis of record)
Clytia noliformis (McCrady, 1859) sensu Calder, 1991 (basis of record)
Clytia raridentata (Alder in Hincks, 1861) accepted as Clytia hemisphaerica (Linnaeus, 1767) (basis of record)
Cnidoscyphus Splettstoesser, 1929 accepted as Thyroscyphus Allman, 1877 (basis of record)
Colobonema Vanhöffen, 1902 (basis of record)
Colobonema sericeum Vanhöffen, 1902 (basis of record)
Corydendrium Van Beneden, 1844 (basis of record)
Corymorpha M. Sars, 1835 (basis of record)
Cosmetira Forbes, 1848 (basis of record)
Cosmetira pilosella Forbes, 1848 (basis of record)
Crossota Vanhöffen, 1902 (basis of record)
Crossota norvegica Vanhöffen, 1902 (basis of record)
Crossota rufobrunnea (Kramp, 1913) (basis of record)
Crypthelia Milne Edwards & Haime, 1849 (basis of record)
Crypthelia medioatlantica Zibrowius & Cairns, 1992 (basis of record)
Crypthelia tenuiseptata Cairns, 1986 (basis of record)
Crypthelia vascomarquesi Zibrowius & Cairns, 1992 (basis of record)
Cryptolarella Stechow, 1913 (basis of record)
Cryptolarella abyssicola (Allman, 1888) (basis of record)
Cryptolaria Busk, 1857 (basis of record)
Cryptolaria exserta Busk, 1858 (basis of record)
Cryptolaria pectinata (Allman, 1888) (basis of record)
Cunina Eschscholtz, 1829 (basis of record)
Cunina octonaria McCrady, 1859 (basis of record)
Cuspidella Hincks, 1866 (basis of record)
Cuspidella costata Hincks, 1868 accepted as Laodicea undulata (Forbes & Goodsir, 1853) (basis of record)
Cuspidella grandis Hincks, 1868 (basis of record)
Cyclocanna Bigelow, 1918 (basis of record)
Cyclocanna welshi Bigelow, 1918 accepted as Cyclocanna producta (G.O. Sars, 1874) (basis of record)
Cytaeis Eschscholtz, 1829 (basis of record)
Cytaeis tetrastyla Eschscholtz, 1829 (basis of record)
Dicoryne Allman, 1859 (basis of record)
Dicoryne conferta (Alder, 1856) (basis of record)
Dicoryne flexuosa Sars, 1874 accepted as Dicoryne conferta (Alder, 1856) (basis of record)
Diphasia Agassiz, 1862 (basis of record)
Diphasia attenuata (Hincks, 1866) (basis of record)
Diphasia fallax (Johnston, 1847) (basis of record)
Diphasia margareta (Hassall, 1841) (basis of record)
Dipleurosoma Boeck, 1868 (basis of record)
Dipleurosoma typicum Boeck, 1868 (basis of record)
Dynamena Lamouroux, 1812 (basis of record)
Dynamena disticha (Bosc, 1802) (basis of record)
Ectopleura L. Agassiz, 1862 (basis of record)

Arctic Ocean for Abietinaria abietina (Linnaeus, 1758) 
Arctic Ocean for Abietinaria filicula (Ellis & Solander, 1786) 
Arctic Ocean for Acaulis primarius Stimpson, 1853 
Arctic Ocean for Aeginopsis laurentii Brandt, 1838 
Arctic Ocean for Aglantha digitale (O. F. Müller, 1776) 
Arctic Ocean for Botrynema brucei Browne, 1908 
Arctic Ocean for Botrynema ellinorae (Hartlaub, 1909) 
Arctic Ocean for Candelabrum phrygium (Fabricius, 1780) 
Arctic Ocean for Cladocarpus formosus Allman, 1877 
Arctic Ocean for Cosmetira pilosella Forbes, 1848 
Arctic Ocean for Crossota norvegica Vanhöffen, 1902 
Arctic Ocean for Crossota rufobrunnea (Kramp, 1913) 
Arctic Ocean for Diphasia attenuata (Hincks, 1866) 
Arctic Ocean for Diphasia fallax (Johnston, 1847) 
Arctic Ocean for Eudendrium insigne Hincks, 1861 
Arctic Ocean for Eudendrium rameum (Pallas, 1766) 
Arctic Ocean for Euphysa aurata Forbes, 1848 
Arctic Ocean for Filellum serpens (Hassall, 1848) 
Arctic Ocean for Grammaria abietina (Sars, 1851) 
Arctic Ocean for Halecium muricatum (Ellis & Solander, 1786) 
Arctic Ocean for Haliscera bigelowi Kramp, 1947 
Arctic Ocean for Homoeonema platygonon Maas, 1893 
Arctic Ocean for Hydractinia allmanii Bonnevie, 1898 
Arctic Ocean for Hydractinia arctica (Jäderholm, 1902) 
Arctic Ocean for Lafoea grandis Hincks, 1874 
Arctic Ocean for Lovenella producta (G.O. Sars, 1874) 
Arctic Ocean for Melicertum octocostatum (M. Sars, 1835) 
Arctic Ocean for Monobrachium parasitum Mereschkowsky, 1877 
Arctic Ocean for Neoturris pileata (Forsskål, 1775) 
Arctic Ocean for Ptychogastria polaris Allman, 1878 
Arctic Ocean for Ptychogena lactea Agassiz, 1865 
Arctic Ocean for Rhizocaulus verticillatus (Linnaeus, 1758) 
Arctic Ocean for Sarsia princeps (Haeckel, 1879) 
Arctic Ocean for Schizotricha frutescens (Ellis & Solander, 1786) 
Arctic Ocean for Sertularella rugosa (Linnaeus, 1758) 
Arctic Ocean for Sminthea arctica (Hartlaub, 1909) 
Arctic Ocean for Stegopoma plicatile (Sars, 1863) 
Arctic Ocean for Tubularia indivisa Linnaeus, 1758 
European waters (ERMS scope) for Abietinaria abietina (Linnaeus, 1758) 
European waters (ERMS scope) for Abietinaria filicula (Ellis & Solander, 1786) 
European waters (ERMS scope) for Acaulis primarius Stimpson, 1853 
European waters (ERMS scope) for Acryptolaria conferta (Allman, 1877) 
European waters (ERMS scope) for Acryptolaria crassicaulis (Allman, 1888) 
European waters (ERMS scope) for Acryptolaria longitheca (Allman, 1877) 
European waters (ERMS scope) for Aegina citrea Eschscholtz, 1829 
European waters (ERMS scope) for Aeginopsis laurentii Brandt, 1838 
European waters (ERMS scope) for Aeginura grimaldii Maas, 1904 
European waters (ERMS scope) for Aequorea aequorea (Forsskål, 1775) 
European waters (ERMS scope) for Aequorea forskalea Péron & Lesueur, 1810 
European waters (ERMS scope) for Aequorea macrodactyla (Brandt, 1835) 
European waters (ERMS scope) for Aequorea pensilis (Haeckel, 1879) 
European waters (ERMS scope) for Aglantha digitale (O. F. Müller, 1776) 
European waters (ERMS scope) for Aglaophenia kirchenpaueri (Heller, 1868) 
European waters (ERMS scope) for Aglaophenia latecarinata Allman, 1877 
European waters (ERMS scope) for Aglaura hemistoma Péron & Lesueur, 1810 
European waters (ERMS scope) for Amphinema biscayana (Browne, 1907) 
European waters (ERMS scope) for Amphinema rubrum (Kramp, 1957) 
European waters (ERMS scope) for Arctapodema ampla (Vanhöffen, 1902) 
European waters (ERMS scope) for Boreohydra simplex Westblad, 1937 
European waters (ERMS scope) for Botrynema brucei Browne, 1908 
European waters (ERMS scope) for Botrynema ellinorae (Hartlaub, 1909) 
European waters (ERMS scope) for Bythotiara murrayi Günther, 1903 
European waters (ERMS scope) for Candelabrum phrygium (Fabricius, 1780) 
European waters (ERMS scope) for Candelabrum serpentarii Segonzac & Vervoort, 1995 
European waters (ERMS scope) for Cladocarpus cartieri Bedot, 1921 
European waters (ERMS scope) for Cladocarpus formosus Allman, 1877 
European waters (ERMS scope) for Cladocarpus sigma (Allman, 1877) 
European waters (ERMS scope) for Clytia gracilis (M. Sars, 1851) 
European waters (ERMS scope) for Clytia hemisphaerica (Linnaeus, 1767) 
European waters (ERMS scope) for Clytia linearis (Thorneley, 1900) 
European waters (ERMS scope) for Clytia noliformis (McCrady, 1859) sensu Calder, 1991 
European waters (ERMS scope) for Clytia raridentata (Alder in Hincks, 1861) 
European waters (ERMS scope) for Colobonema sericeum Vanhöffen, 1902 
European waters (ERMS scope) for Cosmetira pilosella Forbes, 1848 
European waters (ERMS scope) for Crossota norvegica Vanhöffen, 1902 
European waters (ERMS scope) for Crossota rufobrunnea (Kramp, 1913) 
European waters (ERMS scope) for Crypthelia medioatlantica Zibrowius & Cairns, 1992 
European waters (ERMS scope) for Crypthelia tenuiseptata Cairns, 1986 
European waters (ERMS scope) for Crypthelia vascomarquesi Zibrowius & Cairns, 1992 
European waters (ERMS scope) for Cryptolarella abyssicola (Allman, 1888) 
European waters (ERMS scope) for Cryptolaria exserta Busk, 1858 
European waters (ERMS scope) for Cryptolaria pectinata (Allman, 1888) 
European waters (ERMS scope) for Cunina octonaria McCrady, 1859 
European waters (ERMS scope) for Cuspidella costata Hincks, 1868 
European waters (ERMS scope) for Cuspidella grandis Hincks, 1868 
European waters (ERMS scope) for Cyclocanna welshi Bigelow, 1918 
European waters (ERMS scope) for Cytaeis tetrastyla Eschscholtz, 1829 
European waters (ERMS scope) for Dicoryne conferta (Alder, 1856) 
European waters (ERMS scope) for Dicoryne flexuosa Sars, 1874 
European waters (ERMS scope) for Diphasia attenuata (Hincks, 1866) 
European waters (ERMS scope) for Diphasia fallax (Johnston, 1847) 
European waters (ERMS scope) for Diphasia margareta (Hassall, 1841) 
European waters (ERMS scope) for Dipleurosoma typicum Boeck, 1868 
European waters (ERMS scope) for Dynamena disticha (Bosc, 1802) 
European waters (ERMS scope) for Errina aspera (Linnaeus, 1767) 
European waters (ERMS scope) for Errina atlantica Hickson, 1912 
European waters (ERMS scope) for Errina dabneyi (Pourtalès, 1871) 
European waters (ERMS scope) for Eudendrium capillare Alder, 1856 
European waters (ERMS scope) for Eudendrium carneum Clarke, 1882 
European waters (ERMS scope) for Eudendrium insigne Hincks, 1861 

 Status

 for Tiaranna globulosa (Forbes, 1848)

unrecognizable species [details]

 Taxonomic remark

 for Cunina vitrea Gegenbaur, 1857

Juvenile type specimens [details]

 Taxonomy

 for Bougainvillia charcoti Le Danois, 1913

unrecognizable [details]

 Taxonomy

 for Bougainvillia flavida Hartlaub, 1897

unrecognizable [details]

 Taxonomy

 for Clytia raridentata (Alder in Hincks, 1861)

dubious species [details]

 Taxonomy

 for Cunina lativentris Gegenbaur, 1857

dubious species [details]

 Taxonomy

 for Dipurena dolichogaster Haeckel, 1864

unrecognizable species, is either Stauridiosarsia ophiogaster or St. reesi. [details]

 Taxonomy

 for Eudendrium tenellum Allman, 1877

dubious species [details]

 Taxonomy

 for Laodicea chapmani Günther, 1903

unrecognizable [details]

 Taxonomy

 for Laodicea ocellata Babnik, 1948

unrecognizable [details]

 Taxonomy

 for Sarsia barentsi Linko, 1905

dubious species [details]

 Taxonomy

 for Sminthea arctica (Hartlaub, 1909)

dubious species [details]

 Taxonomy

 for Tiaranna ducalis (Forbes & Goodsir, 1853)

unrecognizable [details]