Polycera quadrilineata (Müller, 1776)

04 June, 2006.
The Slate Wreck, Sound of Mull on the west coast.
25 mm animal at 19 metres in 10°C water.
Fuji E900 in Ikelite housing, Inon CU lens 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