Tritonia hombergii Cuvier, 1803

November 1999.
At Finnart Pier, Loch Long on the west coast.
During a night dive several of these 75-80 mm animals were observed

crawling on the new pier legs at around 14 metres. Other smaller specimens were seen on Dead Man's Fingers (Alcyonium digitatum deeper downon the legs.

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