A long, slender and worm-like sea cucumber that reaches 30 cm in length and is typically coloured red or brown, with darker colouration on the dorsal surface. Tube feet are lacking. The mouth is surrounded by 12 tentacles- each with 2 pairs of lateral digits.
Recorded distribution in Britain and Ireland
Found in northern North Sea around the Shetland Islands, the Irish Sea and western coasts of Great Britain. In English Channel, restricted to southern coasts of Devon and Cornwall.
In addition to UK distribution, also found on western and southern coasts of Ireland, as well as in the Adriatic and Aegean Seas. Absent from French side of English Channel.
Found partially or wholly buried in clean or muddy sands.
Body long, slender and worm-like.
Tube feet absent.
12 tentacles, each with 2 pairs of lateral digits plus a rudimentary terminal digit.
Ossicles as anchors and racket-shaped anchor plates with handles up to 35 µm long.
Calcareous ring with 12 radially-perforated parts.
Adults up to 30 cm long.
Colour red or brown, darker on dorsal side.
Similar to Labidoplax thompsoni, which differs in having thickened plates in its anterior body wall.
Bilewitch, J. 2009. Oestergrenia digitata A sea cucumber. In Tyler-Walters H. and Hiscock K. (eds) Marine Life Information Network: Biology and Sensitivity Key Information Reviews, [on-line]. Plymouth: Marine Biological Association of the United Kingdom. [cited 23-03-2018]. Available from: https://www.marlin.ac.uk/species/detail/2300
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