Doris pseudoargus (Rapp, 1827)

20 November, 2011.
Rubha Fiola, Firth of Lorne on the west coast.
55 mm animal at 24 metres in 11.5°C water.
Sony NEX-5 in Nauticam housing, 18-55mm lens, +5 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