Polycera quadrilineata (Müller, 1776)

16 May, 2004.
Kentallen Reef, Loch Linnhe on the west coast.
Water temperature 10° C at 9metres. This single animal, approx 12mm long and with a deformed rhinophore on the right, was found feeding on the bryazoan Membranipora membranacea just beginning to get growing on a kelp stype.
Olympus 5050 in Olympus PT-015 housing with Nikonos 105 flash in slave mode.

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