Facelina bostoniensis (Couthouy, 1838)

21 October, 2012.
Kentallen, Loch Linnhe on the west coast.
38 mm animal at 6 metres. Water temperature 12°C.
Sony NEX-5 in Nauticam housing, 18-55mm lens, +5 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