Tritonia hombergii Cuvier, 1803

9 June 2013.
Mushroom Rock, Garvellachs on the west coast.
35 mm animal at 15 m. Water temperature 9° C.
Sony NEX-5 in Nauticam housing, 18-55mm lens, SubSee +10 dioptre 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