Image of the Day: Glowing Tide

Each year, bioluminescent microorganisms create striking displays on the beaches of San Diego.

By The Scientist Staff | May 10, 2018

Bioluminescent dinoflagellates set the waves aglow off San Diego.JOHN H. MOORE

Lingulodinium polyedrum, a species of marine dinoflagellate (from the Latin for “whirling tail”), proliferates in the warm waters off the coast of San Diego every year. It produces a bioluminescent glow when disturbed—whether by predators or breaking waves—and when the organisms gather in large numbers, the effect can be beautiful. John H. Moore took this photo in Torrey Pines State Natural Reserve, San Diego, California.

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