Pleurobranchus membranaceus (Montagu, 1815)

6 January, 2013.
Bark Rock, Loch Fyne on the west coast.
85 mm animal feeding on an ascidian at at 13 metres in 9°C water.
Sony NEX-5 in Nauticam housing, 18-55mm lens and 2 x Inon D-2000 flashes.
for more information about this species go to one of the links below
OPK - Opistobranquis Encyclopedia of Marine Life of Britain and Ireland sea slug forum