Microchlamylla gracilis (Alder & Hancock, 1844)

12 May, 2013.
Lochside Cottages, Loch Leven on the west coast.
8 mm animal found at 14 metres. Water temperature 8°C.
Sony NEX-5 in Nauticam housing, 18-55mm lens, SubSee +10 dioptre and 2 x Inon D-2000 flashes.
for more information about this species go to one of the links below
OPK - Opistobranquis nudibranchs of the british isles sea slug forum