Onchidoris bilamellata (Linnaeus, 1767)

31 August, 2003.
Eilean Balnagowan Island, Loch Linnhe on the west coast.
Water temperature 14 deg C. At around 16 metres there were many patches of animals with their spawn on the rocky reef and rocks on flat gravel and sand areas. Another mass spawning event.
Olympus C-2020Z in Olympus PT-010 housing with Nikonos 105 flash .

for more information about this species go to one of the links below
scottish nudibranchs

 nudibranchs of the british isles sea slug forum