Favorinus branchialis (Rathke, 1806)

18 July, 2004.
Weasel Loch, Eyemouth on the east coast. One of two animals found among Onchidris bilamellata spawn on a boulder on the bottom of the gulley at 10 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