Dendronotus frondosus (Ascanius, 1774)

23 December, 2012.
Manse Reef, Loch Leven on the west coast.
65 mm animal at 16 metres in 10°C water.
Sony NEX-5 in Nauticam housing, 18-55mm lens, SubSee +5 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