Order Leptothecata Cornelius 1992

Family Campanulariidae Johnston 1836

Genus CLYTIA Lamouroux 1812

• Clytia hemisphaerica (Linnaeus 1767) – medusae: rare – Перцова, 1972

Genus GONOTHYRAEA Allman 1864

• Gonothyraea loveni (Allman 1859) – littoral, sublittoral, dominant – Марфенин, Косевич, 1984; Марфенин, 1993; Marfenin, 1999.

Genus LAOMEDEA Lamouroux 1812

• Laomedea flexuosa Alder 1857 – littoral, dominant – Марфенин, 1993; Marfenin, 1999; Белорусцева, Марфенин, 2002.

Genus OBELIA Péron & Lesueur 1810

• Obelia geniculata (Linnaeus 1758) – polyps: sublittoral, dominant; medusae: dominant – Перцова, 1962; Марфенин, Хоменко, 1988; Марфенин, 1993; Marfenin, 1999.
• Obelia longissima (Pallas 1766) – polyps: sublittoral, dominant; medusae: dominant – Перцова, 1979; Марфенин, Карлсен, 1983; Косевич, Марфенин, 1986; Марфенин, 1993; Marfenin, 1999.

Genus ORTHOPYXIS L. Agassiz 1862

• Orthopyxis integra (MacGillivray 1842) (=Campanularia integra) – sublittoral, common – Марфенин, Карлсен, 1983; Марфенин, 1993.

Family Campanulinidae Hincks 1868

Genus LAFOEINA Sars 1869

• Lafoeina tenuis Sars 1874 – sublittoral, common – own data

Genus OPERCULARELLA Hincks 1868

• Opercularella lacerata (Johnston 1847) (=Campanulina lacerata) – sublittoral, common – Марфенин, Карлсен, 1983.

Family Haleciidae Hincks 1868

Genus HALECIUM Oken 1815

• Halecium corrugatum Nutting 1899 – sublittoral, common – own data
• Halecium mirabile Shidlovskii 1902 – sublittoral, common – own data
• Halecium tenellum Hincks 1861 – sublittoral, common – own data

Family Lafoeidae Hincks 1868

Genus LAFOEA Lamouroux 1821

• Lafoea dumosa (Fleming 1820) (=Lafoea fruticosa) – sublittoral, common – own data

Family Laodiceidae L. Agassiz 1862

Genus STAUROPHORA Brandt 1835

• Staurophora mertensii Brandt 1834 – medusae: common; polyps: sublittoral, rare – Перцова, 1962; own data

Сем Sertulariidae Lamouroux 1812

Genus ABIETINARIA Kirchenpauer 1884

• Abietinaria abietina (Linnaeus 1758) – sublittoral, common – own data

Genus DIPHASIA L. Agassiz 1862

• Diphasia fallax (Johnston 1847) – sublittoral, common – own data

Genus DYNAMENA Lamouroux 1812

• Dynamena pumila (Linnaeus 1758) – littoral, sublittoral, common – Марфенин, 1980; Марфенин, Карлсен, 1983; Марфенин, 1993.

Genus HYDRALLMANIA Hincks 1868

• Hydrallmania falcata (Linnaeus 1758) – sublittoral, common – Марфенин, 1993; own data

Genus SERTULARELLA Gray 1848

• Sertularella gigantea Mereschkowsky 1878 – sublittoral, common – own data
• Sertularella tricuspidata (Alder 1859) – sublittoral, common – own data

Genus SERTULARIA Linnaeus 1758

• Sertularia albimaris Mereschkowsky 1878 – sublittoral, rare – own data
• Sertularia mirabilis (Verrill 1873) – sublittoral, common – own data

Genus THUIARIA Fleming, 1828

• Thuiaria thuja (Linnaeus 1758) – sublittoral, rare – own data

Family Tiaropsidae Boero, Bouillon & Danovaro 1987

Genus TIAROPSIS L. Agassiz 1849

• Tiaropsis multicirrata (M. Sars 1835) – medusae: rare – Перцова, 1962.

rus:Отряд Leptothecata Cornelius 1992