Facelina bostoniensis (Couthouy, 1838)

28 October, 2007.
Jenny's Reef, Loch Long on the west coast. A 25 mm long specimen, one of many with spawn, found at 15 metres on the large boulder in front of the entry point. Water temperature 12°C.
Fuji E900 camera in Ikelite housing, 2 x Inon D-2000 flashes and 2 x Inon CU lenses.

for more information about this species go to one of the links below
OPK - Opistobranquis

 nudibranchs of the british isles sea slug forum