Facelina auriculata (Müller, 1776)

19 August, 2001.
Godag reef off the island of Muck in the Inner Hebrides on the west coast.
Water temperature 13° C at 10 metres, a 25mm long individual below the kelp.
Nikonos 5 with 35 mm lens, 2:1 extension tubes and Ikelite 50 flash.

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