Polycera quadrilineata(Müller, 1776)
27 May, 2015.
Ardnoe Point, Sound of Jura on the west coast.
25 mm animal at 7 metres. Water temperature 9.5°C.
Sony α6000 in Nauticam housing, 18-55mm lens and 2 x Inon D-2000 flashes.
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