Eubranchus farrani (Alder & Hancock, 1844)

18 July, 2004.
Weasel Loch, Eyemouth on the east coast. One of several animals approx 25 mm long found on the kelp between 10 - 14 metres in 13.5°C water.
Olympus 5050 camera in PT-015 housing and Nikonos SB 105 slave flash.