Acanthodoris pilosa (Abildgaard in Müller, 1789)

31 May, 2013.
Lephinchapel, Loch Fyne on the west coast.
30 mm animal at 15 metres in 8.5° C water.
Sony NEX-5 in Nauticam housing, 18-55mm lens, SubSee +10 dioptre 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