Eubranchus viriola (Korshunova et al., 2020)

28 October, 2012.
The Piggery, Loch Fyne on the west coast.
12 mm animal at 8 metres in 11.5°C water.
Sony NEX-5 in Nauticam housing, 18-55mm lens, SubSee +10 dioptre and 2 x Inon D-2000 flashes.