Polycera quadrilineata (Müller, 1776)

16 September, 2007
Cottage Bay, Loch Fyne on the west coast.
Single 12 mm animal at 8 metres. Water temperature 13.5° 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