Doto fragilis (Forbes, 1838)

28 October, 2011.
South Gortein, Loch Fyneon the west coast.
9 mm animal at 12 metres in 12°C water.
Sony NEX-5 in Nauticam housing, 18-55mm lens, SubSee +10 dioptre and 2 x Inon D-2000 flashes

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