(delle Chiaje, 1829)
Description:
Body is firm with smooth skin, dorsal surface more densely and finely pigmented than ventral surface. Maximum mantle length 60 mm, comprising about one-third total length of animal. Dorsal anterior edge of mantle is not fused to head, with well-marked lip continuous with rest of mantle opening.
Fins are short and rounded, rather fleshy; anterior edge of fins is not reaching anterior edge of mantle.
Length of arms is about twice the length of head. Arms are more or less rounded in section; each with two rows of suckers proximally, four or more rows distally.
Club suckers are small, similar, arranged in approximately ten rows.
Habitat:
Shallow sublittoral and offshore.
Distribution:
From western Norway and the Faeroe Islands to the Mediterranean and Adriatic Seas and north-western Africa. Also recorded in the Greenland Sea off the coasts of Greenland and Iceland. Not in the southern North Sea (Distr. R. macrosoma).