Trinchesia caerulea (Montagu, 1804)

27 September, 2008.
4.5 Metre Reef, Loch Nevis on the west coast.
20 mm animal at 14 metres. Water temperature 14° C.
Fuji E900 camera in Ikelite housing, 2 x Inon D-2000 flashes and 2 x Inon CU lenses.

for more information about this species go to one of the links below
scottish nudibranchs

 nudibranchs of the british isles sea slug forum