Tenellia cuanensis (Korshunova et al, 2019)

25 January, 2015.
Ardcastle, Loch Fyne on the west coast .
20 mm animal at 14 metres. Water temperature 8°C.
Sony ?6000  in Nauticam housing, 50 mm Zeiss Touit macro lens and 2 x Inon D-2000 flashes