Aeolidia papillosa (Linnaeus, 1761)

24 November, 2014.
Inverkip Pier, Firth of Clyde on the west coast.
A small group of feeding animals on a pier leg at 12 metres. The larger specimens were approx. 50 mm long. Water temperature 11°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