Wednesday, May 9, 2018

California red tide is glowing blue at night

SAN DIEGO (AP) — A red tide on the Southern California coast is causing the surf to glow neon blue in the dark.

An algae bloom filled with bioluminescent phytoplankton has been lighting up the ocean the past two nights on an 18-mile stretch from La Jolla to Encinitas. The micro-organisms light up along the face of the wave when it crashes near the shore.

Oceanographer Michael Latz at UC San Diego’s Scripps Institution of Oceanography predicted the event on Monday based on “dense numbers of dinoflagellates” in a water sample — but he told the San Diego Union-Tribune that “we don’t know how long they will last.”

The previous red tide was in September 2013, and it lasted about a week, he said.

The “red” part of the tide can be seen during the day, when the plankton rising toward the sunlight make the top of the water red.

Some red tides are associated with toxicity in shellfish. Latz said the plankton in this particular tide are not among those considered highly toxic.

Beachgoers who wish to see or photograph the phenomenon are advised to find a dark beach at least two hours after sundown. In addition to glowing on the breaking waves, plankton on the sand at the water line emit their bioluminescence in the footprints of those walking on the beach.

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Baca Di sini Bro https://www.mercurynews.com/2018/05/09/red-tide-causing-surf-to-glow-in-parts-of-california/

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