Doto pinnatifida (Montagu, 1804)

25 June, 2015.
The Shuna, Sound of Mull on the west coast .
A small group at the base of the hydroid, the larger is approx 20 mm at 28 metres. Pink spawn on the hydroid.
Water temperature 10°C.
Sony α6000  in Nauticam housing, 18-55 mm 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