21/6/17 , Three Cliffs Bay, Gower 2am swim in bioluminescent plankton

Beautiful! I swam with them in Suffolk years ago, magical!

That's beautiful. I saw the pic thumbnail and wondered what that was, so clicked on it and read your description. I didn't even know such things existed! I take it they're not harmful to humans? Wonderful sight to behold. Thank you for the amazing pics.

Edited July 3, 2017 by Windblade