Onchidoris bilamellata (Linnaeus, 1767)

18 July, 2004.
Weasel Loch, Eyemouth on the east coast. There were many patches of spawning animals found on the walls of the gulley and reef outside at depths from 6 - 12 metres in 13.5°C water.
Olympus 5050 camera in PT-015 housing and Nikonos SB 105 slave flash.

for more information about this species go to one of the links below
OPK - Opistobranquis

 nudibranchs of the british isles sea slug forum