Goniodoris nodosa (Montagu, 1808)

1 May, 2015.
Seven Step Reef, Loch Creran on the west coast .
10 mm animal 6 metres - another 8 mm animal was seen close by.
Water temperature 8°C.
Sony α6000  in Nauticam housing, 50 mm Zeiss 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