But the ethereal glow at Penmon Point on Anglesey is actually caused by something very much of this world – a chemical reaction called bioluminescence, which occurs when tiny organisms in the water are disturbed as the waves break on the shore
Photos posted on the AuroraWatchUK Flickr stream in the past few days show displays at Penmon on Anglesey, Pendle Hill in Lancashire, and over Ben Wyvis in Ross-shire, Scotland. AuroraWatchUK has produced a useful map with markers showing the