Goniodoris nodosa (Montagu, 1808)

30 November, 2014.
South Gortein, Loch Fyne on the west coast .
3 mm animal 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