Pleurobranchus membranaceus (Montagu, 1815)

12 May, 2002.
South Gortein, Loch Fyne on the west coast.
Two of many animals and spawn seen from 7 to 15 metres in 10°C. The biggest concentration was on the 7 M level at the point where the muddy sand and cobble slope starts. Groups of up to six animals were found in heaps and others mating, egg-laying, eating white ascidians and the odd dead animal among the debris. When disturbed they were soon swimming up in the water column.
Nikon 90SX with 60mm lens in Subal housing and Nikonos 105 flash.