Doto coronata (Gmelin, 1791)

08 June, 2006.
Craigleith, Firth of Forth on the east coast. 
On hydroid, Abientinaria abientina on the the seabed at 26 metres in 10 °C water, a large 20 mm long animal alongside a much smaller specimen with spawn.
Fuji E900 in Ikelite housing with 2 x DML-2 CU and Inon D-2000 flash.

for more information about this species go to one of the links below
OPK - Opistobranquis nudibranchs of the british isles sea slug forum