Actigia pusilla (Gaertner, 1774) accepted as Coryne pusilla Gaertner, 1774 (basis of record)
Bougainvillia ramosa f. benedenii Bonnevie, 1898 accepted as Bougainvillia muscus (Allman, 1863) (basis of record)
Campanularia pelagica Van Breemen, 1905 accepted as Clytia pelagica (Van Breemen, 1905) accepted as Clytia gracilis (M. Sars, 1851) (basis of record)
Campanulina lacerata (Johnston, 1847) accepted as Opercularella lacerata (Johnston, 1847) (basis of record)
Corynopsis alderi (Hodge, 1863) accepted as Hydractinia alderi (Hodge, 1863) accepted as Podocoryna alderi Hodge, 1863 (basis of record)
Dymella articulata (Pallas, 1766) accepted as Thuiaria articulata (Pallas, 1766) (basis of record)
Laomedea dichotoma (Linnaeus, 1758) accepted as Obelia dichotoma (Linnaeus, 1758) (basis of record)
Laomedea flabellata (Hincks, 1866) accepted as Obelia longissima (Pallas, 1766) (basis of record)
Laomedea gelatinosa (Pallas, 1766) accepted as Hartlaubella gelatinosa (Pallas, 1766) (basis of record)
Laomedea gracilis M. Sars, 1851 accepted as Clytia gracilis (M. Sars, 1851) (basis of record)
Laomedea gracilis var. pelagica (van Breemen, 1905) accepted as Clytia pelagica (Van Breemen, 1905) accepted as Clytia gracilis (M. Sars, 1851) (basis of record)
Laomedea longissima (Pallas, 1766) accepted as Obelia longissima (Pallas, 1766) (basis of record)
Laomedea pelagica (van Breeman, 1905) accepted as Clytia pelagica (Van Breemen, 1905) accepted as Clytia gracilis (M. Sars, 1851) (basis of record)
Laomedea spinulosa (Bale, 1888) accepted as Obelia bidentata Clark, 1875 (basis of record)
Nigellastrum Oken, 1815 accepted as Diphasia Agassiz, 1862 (basis of record)
Nigellastrum attenuatum (Hincks, 1866) accepted as Diphasia attenuata (Hincks, 1866) (basis of record)
Nigellastrum fallax (Johnston, 1847) accepted as Diphasia fallax (Johnston, 1847) (basis of record)
Nigellastrum pinnatum (Pallas, 1766) accepted as Diphasia nigra (Pallas, 1766) (basis of record)
Nigellastrum rosaceum (Linnaeus, 1758) accepted as Diphasia rosacea (Linnaeus, 1758) (basis of record)
Perigonimus repens (Wright, 1858) accepted as Leuckartiara octona (Fleming, 1823) (basis of record)
Sertomma tamarisca (Linnaeus, 1758) accepted as Tamarisca tamarisca (Linnaeus, 1758) (basis of record)
Sertularia cupressina var. argentea (Linnaeus, 1758) accepted as Sertularia argentea Linnaeus, 1758 (basis of record)
Thecocarpus myriophyllum (Linnaeus, 1758) accepted as Lytocarpia myriophyllum (Linnaeus, 1758) (basis of record)
Thuiaria lonchitis (Ellis & Solander, 1786) accepted as Thuiaria articulata (Pallas, 1766) (basis of record)
Tubularia dumortierii Van Beneden, 1844 accepted as Ectopleura dumortierii (Van Beneden, 1844) (basis of record)

Belgian Exclusive Economic Zone for Laomedea gracilis var. pelagica (van Breemen, 1905) 
Belgian Exclusive Economic Zone for Laomedea gracilis var. pelagica (van Breemen, 1905) 
Boulogne-sur-Mer for Abietinaria filicula (Ellis & Solander, 1786) 
Boulogne-sur-Mer for Hydrallmania falcata (Linnaeus, 1758) 
Boulogne-sur-Mer for Nemertesia antennina (Linnaeus, 1758) 
Boulogne-sur-Mer for Nemertesia ramosa (Lamarck, 1816) 
Boulogne-sur-Mer for Sertularella polyzonias (Linnaeus, 1758) 
Den Helder for Cordylophora caspia (Pallas, 1771) 
Doggersbank for Abietinaria abietina (Linnaeus, 1758) 
Doggersbank for Amphisbetia operculata (Linnaeus, 1758) 
Doggersbank for Campanularia johnstoni Alder, 1856 
Doggersbank for Campanularia johnstoni Alder, 1856 
Doggersbank for Filellum serpens (Hassall, 1848) 
Doggersbank for Grammaria serpens (Hassall, 1848) 
Doggersbank for Hydrallmania falcata (Linnaeus, 1758) 
Doggersbank for Lafoea dumosa (Fleming, 1820) 
Doggersbank for Laomedea geniculata (Linnaeus, 1758) 
Doggersbank for Laomedea geniculata (Linnaeus, 1758) 
Doggersbank for Laomedea geniculata (Linnaeus, 1758) 
Doggersbank for Sertularia cupressina var. argentea (Linnaeus, 1758) 
Doggersbank for Tubularia indivisa Linnaeus, 1758 
Dutch Exclusive Economic Zone for Abietinaria abietina (Linnaeus, 1758) 
Dutch Exclusive Economic Zone for Actigia pusilla (Gaertner, 1774) 
Dutch Exclusive Economic Zone for Aglaophenia pluma (Linnaeus, 1758) 
Dutch Exclusive Economic Zone for Amphisbetia operculata (Linnaeus, 1758) 
Dutch Exclusive Economic Zone for Bougainvillia flavida Hartlaub, 1897 
Dutch Exclusive Economic Zone for Bougainvillia muscus (Allman, 1863) 
Dutch Exclusive Economic Zone for Bougainvillia ramosa (Van Beneden, 1844) 
Dutch Exclusive Economic Zone for Bougainvillia ramosa f. benedenii Bonnevie, 1898 
Dutch Exclusive Economic Zone for Bougainvillia ramosa muscus (Allman, 1863) 
Dutch Exclusive Economic Zone for Calycella syringa (Linnaeus, 1767) 
Dutch Exclusive Economic Zone for Campanularia elongata Van Beneden, 1866 
Dutch Exclusive Economic Zone for Campanularia hincksii Alder, 1856 
Dutch Exclusive Economic Zone for Campanularia integra MacGillivray, 1842 
Dutch Exclusive Economic Zone for Campanularia johnstoni Alder, 1856 
Dutch Exclusive Economic Zone for Campanularia johnstoni Alder, 1856 
Dutch Exclusive Economic Zone for Campanularia johnstoni Alder, 1856 
Dutch Exclusive Economic Zone for Campanularia johnstoni Alder, 1856 
Dutch Exclusive Economic Zone for Campanularia johnstoni Alder, 1856 
Dutch Exclusive Economic Zone for Campanularia verticillata (Linnaeus, 1758) 
Dutch Exclusive Economic Zone for Campanularia verticillata (Linnaeus, 1758) 
Dutch Exclusive Economic Zone for Campanularia volubilis (Linnaeus, 1758) 
Dutch Exclusive Economic Zone for Campanulina hincksii Hartlaub, 1897 
Dutch Exclusive Economic Zone for Campanulina hincksii Hartlaub, 1897 
Dutch Exclusive Economic Zone for Campanulina lacerata (Johnston, 1847) 
Dutch Exclusive Economic Zone for Campanulina tenuis Van Beneden, 1847 
Dutch Exclusive Economic Zone for Clava multicornis (Forsskål, 1775) 
Dutch Exclusive Economic Zone for Corymorpha nutans M. Sars, 1835 
Dutch Exclusive Economic Zone for Coryne eximia Allman, 1859 
Dutch Exclusive Economic Zone for Coryne pusilla Gaertner, 1774 
Dutch Exclusive Economic Zone for Corynopsis alderi (Hodge, 1863) 
Dutch Exclusive Economic Zone for Dicoryne conferta (Alder, 1856) 
Dutch Exclusive Economic Zone for Dymella articulata (Pallas, 1766) 
Dutch Exclusive Economic Zone for Dynamena pumila (Linnaeus, 1758) 
Dutch Exclusive Economic Zone for Ectopleura dumortierii (Van Beneden, 1844) 
Dutch Exclusive Economic Zone for Eudendrium rameum (Pallas, 1766) 
Dutch Exclusive Economic Zone for Eudendrium ramosum (Linnaeus, 1758) 
Dutch Exclusive Economic Zone for Filellum serpens (Hassall, 1848) 
Dutch Exclusive Economic Zone for Grammaria serpens (Hassall, 1848) 
Dutch Exclusive Economic Zone for Grammaria serpens (Hassall, 1848) 
Dutch Exclusive Economic Zone for Grammaria serpens (Hassall, 1848) 
Dutch Exclusive Economic Zone for Halecium beanei (Johnston, 1838) 
Dutch Exclusive Economic Zone for Halecium halecium (Linnaeus, 1758) 
Dutch Exclusive Economic Zone for Hydractinia carnea (M. Sars, 1846) 
Dutch Exclusive Economic Zone for Hydractinia echinata (Fleming, 1828) 
Dutch Exclusive Economic Zone for Hydrallmania falcata (Linnaeus, 1758) 
Dutch Exclusive Economic Zone for Kirchenpaueria pinnata (Linnaeus, 1758) 
Dutch Exclusive Economic Zone for Lafoea dumosa (Fleming, 1820) 
Dutch Exclusive Economic Zone for Laomedea angulata Hincks, 1861 
Dutch Exclusive Economic Zone for Laomedea dichotoma (Linnaeus, 1758) 
Dutch Exclusive Economic Zone for Laomedea flabellata (Hincks, 1866) 
Dutch Exclusive Economic Zone for Laomedea flexuosa Alder, 1857 
Dutch Exclusive Economic Zone for Laomedea gelatinosa (Pallas, 1766) 
Dutch Exclusive Economic Zone for Laomedea geniculata (Linnaeus, 1758) 
Dutch Exclusive Economic Zone for Laomedea geniculata (Linnaeus, 1758) 
Dutch Exclusive Economic Zone for Laomedea geniculata (Linnaeus, 1758) 
Dutch Exclusive Economic Zone for Laomedea geniculata (Linnaeus, 1758) 
Dutch Exclusive Economic Zone for Laomedea gracilis var. pelagica (van Breemen, 1905) 
Dutch Exclusive Economic Zone for Laomedea hyalina (Hincks, 1866) 
Dutch Exclusive Economic Zone for Laomedea hyalina (Hincks, 1866) 
Dutch Exclusive Economic Zone for Laomedea lauta Hummelink, 1930 
Dutch Exclusive Economic Zone for Laomedea longissima (Pallas, 1766) 
Dutch Exclusive Economic Zone for Laomedea longissima (Pallas, 1766) 
Dutch Exclusive Economic Zone for Laomedea longissima (Pallas, 1766) 
Dutch Exclusive Economic Zone for Laomedea loveni Allman, 1859 
Dutch Exclusive Economic Zone for Laomedea loveni Allman, 1859 
Dutch Exclusive Economic Zone for Laomedea pelagica (van Breeman, 1905) 
Dutch Exclusive Economic Zone for Laomedea pelagica (van Breeman, 1905) 
Dutch Exclusive Economic Zone for Leuckartiara octona (Fleming, 1823) 
Dutch Exclusive Economic Zone for Nemertesia antennina (Linnaeus, 1758) 
Dutch Exclusive Economic Zone for Nemertesia ramosa (Lamarck, 1816) 
Dutch Exclusive Economic Zone for Nigellastrum attenuatum (Hincks, 1866) 
Dutch Exclusive Economic Zone for Nigellastrum fallax (Johnston, 1847)  (doubtful)
Dutch Exclusive Economic Zone for Nigellastrum pinnatum (Pallas, 1766) 
Dutch Exclusive Economic Zone for Nigellastrum rosaceum (Linnaeus, 1758) 
Dutch Exclusive Economic Zone for Obelia dichotoma (Linnaeus, 1758) 
Dutch Exclusive Economic Zone for Opercularella lacerata (Johnston, 1847) 
Dutch Exclusive Economic Zone for Perigonimus repens (Wright, 1858) 
Dutch Exclusive Economic Zone for Perigonimus repens (Wright, 1858) 
Dutch Exclusive Economic Zone for Perigonimus repens (Wright, 1858) 

 Classification

 for Campanulina lacerata (Johnston, 1847)

Originally classified as Campanulina (Opercularella) lacerata [details]

 Classification

 for Grammaria serpens (Hassall, 1848)

Leloup, 1933 classified this species as Grammaria (Filelllum) serpens [details]

 Classification

 for Hydractinia carnea (M. Sars, 1846)

Leloup, 1933 classifies this species as Hydractinia (Podocoryne) carnea. [details]

 Classification

 for Laomedea pelagica (van Breeman, 1905)

Leloup,1933 proposed this to be the pelagic form ofLaomedea gracilis (Sars). [details]

 Habitat

 for Bougainvillia muscus (Allman, 1863)

Colonies found on shells [details]

 Habitat

 for Bougainvillia ramosa (Van Beneden, 1844)

tufts of species found on seaweed [details]

 Habitat

 for Clava multicornis (Forsskål, 1775)

Species found in tufts on Mytilus [details]

 Habitat

 for Cordylophora caspia (Pallas, 1771)

Temperature 16°C, 11.5 PSU (brackish). [details]

 Habitat

 for Grammaria serpens (Hassall, 1848)

Found with Coppinia on the stems of Tubularia indivisa Linné, Abietinaria abietina (Linné), Sertularia ... [details]

 Habitat

 for Laomedea longissima (Pallas, 1766)

found on shells and shell fragments; on polychaete species of Aphrodita (Leloup, 1934). [details]

 Spelling

 for Halecium beanei (Johnston, 1838)

Species spelt Halecium beani [details]

 Spelling

 for Polyplumaria frutescens (Ellis & Solander, 1786)

Polyplumularia frutescens [details]

 Spelling

 for Thuiaria thuja (Linnaeus, 1758)

Leloup, 1933 uses the spelling Thujaria thuja [details]