Polycera quadrilineata (Müller, 1776)

30 September, 2007
Bogha Ruadh, Island of Muck on the west coast.
Single 15 mm animal at 12 metres. Water temperature 13° C.
Fuji E900 camera in Ikelite housing, 2 x Inon D-2000 flashes and 2 x Inon CU lenses

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