Dendronotus frondosus (Ascanius, 1774)

30 April, 2001.
On the reef at Kentallen Pier in Loch Linnhe on the west coast.
A 26 mm long animal at 18 metres in 8° C water on a hydroid. This seems to be an intermediate colour between the 'white' and 'red' colourings previously seen.
Nikon 90SX with 60mm lens with +3 dioptre in Subal housing, housed SB26 flash and Nikonos 105 slave flash (and lots of back scatter).

for more information about this species go to one of the links below
OPK - Opistobranquis

nudibranchs of the british isles sea slug forum