Acanthodoris pilosa (Abildgaard in Müller, 1789)

29 September, 2007.
The Cave, Hyskeir on the west coast.
This pair of 25mm animals were among several many ranging in size from 15 - 25mm found on the Alcyonidium diaphanum with spawn.
Fuji E900 in Ikelite housing, Inon CU lens and 2 x Inon D-2000 flashes.
for more information about this species go to one of the links below
OPK - Opistobranquis nudibranchs of the british isles sea slug forum