Facelina bostoniensis (Couthouy, 1838)

28 September, 2003.
Ellice Shoal, Loch Hourn on the west coast.
At 18 metres, a 20 mm long animal. Water temperature 13° C.
Nikon 90SX with 105mm lens in Subal housing and housed SB26 flash

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

 nudibranchs of the british isles sea slug forum