Order Anthoathecata Cornelius 1992

Family Boreohydridae Westblad 1947

Genus BOREOHYDRA Westblad 1937

• Boreohydra simplex Westblad 1937 – polyps: sublittoral, silt, rare – own data

Family Bougainvilliidae Lütken 1850

Genus BOUGAINVILLIA Lesson 1830

• Bougainvillia superciliaris (L. Agassiz 1849) – polyps: sublittoral, rare; medusae: dominant – own data, Перцова, 1962.

Family Corymorphidae Allman 1872

Genus EUPHYSA Forbes 1848

• Euphysa aurata Forbes 1848 – polyps: sublittoral, silt, rare; medusae: rare – Перцова, 1979, own data
• Euphysa flammea Linko 1905 – medusae rare – Перцова, 1979.
• Euphysa tentaculata Linko 1905 – medusae rare – Перцова, 1979.

Family Corynidae Johnston 1836

Genus CORYNE Gaertner 1774

• Coryne producta (Wright 1858) (=Stauridiosarsia producta) – polyps: sublittoral, common; medusae: common – Перцова, 1972; own data

Genus SARSIA Lesson 1843

• Sarsia lovenii (M. Sars 1846) – littoral, common – Марфенин, Карлсен, 1983; Марфенин, 1993; own data
• Sarsia princeps (Haeckel 1879) – medusae: rare – Перцова, 1979.
• Sarsia tubulosa (M. Sars 1835) – polyps: littoral, common; medusae: dominant – Перцова, 1962; Марфенин, Карлсен, 1983.

Family Eudendriidae L. Agassiz 1862

Genus EUDENDRIUM Ehrenberg 1834

• Eudendrium capillare Alder 1856 – sublittoral, common – own data

Family Hydractiniidae L. Aggasiz 1862

Genus CLAVA Gmelin 1788

• Clava multicornis (Forskål 1775) – littoral, dominant – Марфенин, 1985; Марфенин, 1993; Орлов, Марфенин, 1993.

Genus HYDRACTINIA van Beneden 1841

• Hydractinia echinata (Fleming 1828) – sublittoral, rare – own data

Family Oceaniidae Eschscholtz 1829

Genus RHIZOGETON L. Agassiz 1862

• Rhizogeton nudus Broch 1910 – littoral, rare – own data

Family Pandeidae Haeckel 1879

Genus CATABLEMA Haeckel 1879

• Catablema vesicarium (A. Agassiz 1862) – rare (medusae) – Перцова, 1962.

Genus HALITHOLUS Hartlaub 1913

• Halitholus cirratus Hartlaub, 1913 (=Perigonimus yoldiaearcticae) – polyps: sublittoral, common, (on shells of bivalves *Portlandia arctica); medusae: rare – Перцова, 1962, own data
• Genus LEUCKARTIARA Hartlaub 1914
• Leuckartiara abyssi (G.O. Sars 1874) – sublittoral, common – Марфенин, Карлсен, 1983.

Family Protohydridae Allman 1888

Genus PROTOHYDRA Greeff 1869

• Protohydra leuckarti Greeff 1870 – polyps: littoral, sandy, rare – own data

Family Rathkeidae Russell 1953

Genus RATHKEA Brandt 1838

• Rathkea octopunctata (M. Sars 1835) – polyps: sublittoral, rare; medusae: common – Перцова, 1962; Марфенин, Карлсен, 1983.

Family Tubulariidae Fleming 1828

Genus ECTOPLEURA L. Agassiz 1862

• Ectopleura larynx (Ellis & Solander 1786) (=Tubularia larynx) – sublittoral, common – Marfenin, 1985b, 1993.

Genus PLOTOCNIDE Wagner 1885

• Plotocnide borealis Wagner 1885 – rare – Pertzova, 1979.

Genus TUBULARIA Linnaeus 1758

• Tubularia indivisa Linnaeus 1758 – sublittoral, rare – own data

Genus Hybocodon L. Agassiz, 1860

• Hybocodon prolifer Agassiz, 1860 (=Tubularia prolifer) – rare. - The medusae was encounted in May 2012. - Prudkovsky, 2012 (http://wsbs-msu.ru/news/view.php?ID=328)

rus: Отряд Anthoathecata Cornelius 1992