Bioluminescent waves return to California beach thanks to algae bloom

PACIFICA, Calif. — Bioluminescent blue waves are back on the California coast.

These waves typically appear during the late summer and happen when algae blooms get stirred up and produce a chemical reaction that gives off the light.

Video taken last month in Pacifica, located in the Bay Area, shows the illuminated waves. The natural phenomenon also happens in Southern California.

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The waves make for a stunning sight, but the algae blooms can be toxic to marine life.

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