Acanthodoris pilosa (Abildgaard in Müller, 1789)

12 January, 2003.
Rubha na Creige, Loch Etive on the west coast.
Water temperature 10° C at 5 metres, a 30 mm long individual, one of several mostly smaller animals on the kelp at this depth.
Nikon 90SX with 60mm lens in Subal housing and housed Nikon flash.

for more information about this species go to one of the links below
OPK - Opistobranquis nudibranchs of the british isles sea slug forum