Limacia clavigera (Müller, 1776)

28 July, 2001.
The Slate Wreck in the Sound of Mull on the west coast. Water temperature 13° C at 8 metres a 12mm long animal on kelp.
Nikonos 5 with 35 mm lens, 2:1 extension tubes and Ikelite 50 flash.

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