Along a seashore in Hong Kong yesterday, a vibrant blue glow was seen emanating from the water. Beautiful photographs show the shore glimmering, with the lights of the city sparkling in the background.
The luminescence is an algal bloom created by Noctiluca scintillans, nicknamed “sea sparkle.” When disturbed by currents or waves, the bloom glows. “It looks like algae and can act like algae. But it’s not quite,” wrote Seth Borenstein of the Associated Press. “Noctiluca is a type of single-cell life that eats plankton and is eaten by other species.”