The waves off the coast of Anglesey Island can be seen turning electric blue, with glow caused by a type of plankton as a defense mechanism to ward off predators. (courtesy: Kris WIlliams)
The waves off the coast of Anglesey Island can be seen turning electric blue, with glow caused by a type of plankton as a defense mechanism to ward off predators. (courtesy: Kris WIlliams)