Pleurobranchus membranaceus (Montagu, 1815)

31 August, 2014.
The Piggery, Loch Fyne on the west coast. 
120 mm animal at found at 8 m. One of several and spawn between 8 - 12 m. Water temperature 13°C.
Sony α6000  in Nauticam housing, 18-55 mm lens and 2 x Inon D-2000 flashes.