Trinchesia caerulea (Montagu, 1804)

3 June, 2012.
South Gortein, Loch Fyne on the west coast.
10 mm animal with large parasite eggs on the head at 16 metres in 10°C water.
Canon S100 in Ikelite housing, SubSee +5 dioptre and Inon D-2000 flash.

For more information about this species go to the link below.
OPK - Opistobranquis