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Bioluminescent tide
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View of a Bioluminescent tide during the annual return of the red tide in Del Mar, CAlifornia on Friday, April 17, 2020. The blue, neon glow of the tide is created by algae blooms, known as red tides, that are filled with phytoplankton called "dinoflagellates.” The organisms react with bioluminescence when jostled by the moving waves.(Photo by Sandy hUffaker/Redux)

