Arachnactis albida Sars, 1846 (additional source)
Cerianthus lloydii Gosse, 1859 accepted as Synarachnactis lloydii (Gosse, 1859) (additional source)
Synarachnactis bournei (Fowler, 1897) accepted as Cerianthus lloydii Gosse, 1859 accepted as Synarachnactis lloydii (Gosse, 1859) (additional source)

Anglesey for Cerianthus lloydii Gosse, 1859 
Arctic Ocean for Cerianthus lloydii Gosse, 1859 
Barents Sea for Arachnactis albida Sars, 1846 
Blankenberge for Synarachnactis bournei (Fowler, 1897) 
Cap Gris Nez for Cerianthus lloydii Gosse, 1859 
Cap Gris Nez for Synarachnactis bournei (Fowler, 1897) 
Cap Gris Nez for Synarachnactis bournei (Fowler, 1897) 
Cap Gris Nez for Synarachnactis bournei (Fowler, 1897) 
East Coast of England for Arachnactis albida Sars, 1846 
East Coast of England for Synarachnactis bournei (Fowler, 1897) 
East Coast of England for Synarachnactis bournei (Fowler, 1897) 
East Hinder for Cerianthus lloydii Gosse, 1859 
East Hinder for Synarachnactis bournei (Fowler, 1897) 
English Channel for Diphyes truncata Sars, 1846 
English Channel for Lensia conoidea (Keferstein & Ehlers, 1860) 
English Channel for Synarachnactis bournei (Fowler, 1897) 
Faeroe Exclusive Economic Zone for Arachnactis albida Sars, 1846 
Flemish Banks for Cerianthus lloydii Gosse, 1859 
Flemish Banks for Synarachnactis bournei (Fowler, 1897) 
German Bight for Arachnactis albida Sars, 1846 
Greenlandic Exclusive Economic Zone for Cerianthus lloydii Gosse, 1859 
Guernsey for Cerianthus lloydii Gosse, 1859 
Hebrides for Arachnactis albida Sars, 1846 
Hebrides for Dimophyes arctica (Chun, 1897) 
Helgoland for Cerianthus lloydii Gosse, 1859 
Irish Sea for Arachnactis albida Sars, 1846 
Irish Sea for Cerianthus lloydii Gosse, 1859 
Kara Sea for Cerianthus lloydii Gosse, 1859 
Nordhinter for Cerianthus lloydii Gosse, 1859 
North Sea for Cerianthus lloydii Gosse, 1859 
Norwegian Exclusive Economic Zone for Arachnactis albida Sars, 1846 
Norwegian Exclusive Economic Zone for Cerianthus lloydii Gosse, 1859 
Oostende for Cerianthus lloydii Gosse, 1859 
Plymouth for Arachnactis albida Sars, 1846 
Plymouth for Stephanomia bijuga (Delle Chiaje, 1844) 
Shetlands for Arachnactis albida Sars, 1846 
Shetlands for Dimophyes arctica (Chun, 1897) 
Skagerrak for Arachnactis albida Sars, 1846 
Skagerrak for Cerianthus lloydii Gosse, 1859 
Southern Bight for Arachnactis albida Sars, 1846 
Spitsbergen for Cerianthus lloydii Gosse, 1859 
Thorntonbank for Cerianthus lloydii Gosse, 1859 
United Kingdom Exclusive Economic Zone for Cerianthus lloydii Gosse, 1859 
Vlissingen for Cerianthus lloydii Gosse, 1859 
Wandelaar for Cerianthus lloydii Gosse, 1859 
Wandelaar for Synarachnactis bournei (Fowler, 1897) 
Wandelaar for Synarachnactis bournei (Fowler, 1897) 
Westhinder for Cerianthus lloydii Gosse, 1859 

 Distribution

 for Cerianthus lloydii Gosse, 1859

Only larvae, no adult forms found along the English coasts. Species might be bound to a particular sediment type. [details]

 Distribution

 for Galetta australis (Quoy & Gaimard, 1833)

Until 1912 this species had not been found in the Channel and it was thought to be confined to the west of the ... [details]

 Habitat

 for Cerianthus lloydii Gosse, 1859

Only observed at a depth between 24 and 39 meters. [details]