Limacia clavigera (Müller, 1776)

29 May, 2011.
The Garden Centre, Loch Fyne on the west coast.
30 mm animal at 6 metres. Water temperature 9.5° C.
Sony NEX-5 in Nauticam housing, 18-55mm lens, Inon UCL 165 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