Onchidoris muricata (Müller, 1776)

25 April, 2010.
Dunollie Point, Oban on the west coast.
15 mm animal at 12 metres. Water temperature 8° C.
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
nudibranchs of the british isles sea slug forum