Facelina bostoniensis (Couthouy, 1838)

8 April, 2011.
Sgeir na Sean Chroit, Loch Linnhe on the west coast.
28 mm animal at 8 metres. Water temperature 7° 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