Facelina bostoniensis (Couthouy, 1838)

31 January, 2010.
Manse Reef, Loch Leven on the west coast.
12 mm animal at 9 metres. Water temperature 8° C.
Fuji E900 in Ikelite housing with Inon CU lens and Inon D-2000 flash.

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