Tergipes tergipes (Forsskål, 1775)

21 May, 2015.
Manse Reef, Loch Leven on the west coast.
3 mm animal at 12 metres. Water temperature 10°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