Facelina bostoniensis (Couthouy, 1838)

28 March, 2004.
Ardtornish Cliff in the Sound of Mull on the west coast.
Water temperature 8deg C at 16 metres, a 20 mm long individual.
Olympus C5050Z in PT-015 housing with Nikonos 105 flash.

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

 nudibranchs of the british isles sea slug forum