Goniodoris nodosa (Montagu, 1808)

24 May, 2015.
Lephinchapel. Loch Fyne on the west coast.
18 mm animal at 14 metres. Water temperature 9.5°C.
Sony α6000  in Nauticam housing, Zeiss 50 mm 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