Acanthodoris pilosa (Abildgaard in Müller, 1789)

30 November, 2014.
South Gortein, Loch Fyne on the west coast .
3 mm juvenile on Finger bryozoan, Alcyonidium diaphanum, at 20 metres.
Water temperature 11°C.
Sony α6000  in Nauticam housing, 50 mm Zeiss Touit macro lens 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