Laona ventricosa (Jeffreys, 1865)

16 June, 2017.
Scooty Point, Eyemouth on the east coast.
8 mm animal at 18 metres. Water temperature 9°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   Sea Slug Forum