Red tide sticks around O.C.: 7 things to know about glowing bioluminescent waves Photographer Mark Girardeau captured this surfer riding a bioluminescence wave in San Clemente on May 5, 2020.

Bioluminescence from a red tide lights up the waves in a vibrant blue color in San Diego, Calif., in this photo posted to Instagram May 9, 2018. John Cunningham/ itsadogslife5/ Instagram ...

The event known as red tide is back in San Diego and a local photographer is on the hunt for the perfect shot of bioluminescence.

The red tide is back and it's rolling what appears to be electric blue waves into parts of San Diego's coastline. Here's where bioluminescence has been spotted this week.

As most San Diegans probably know, bioluminescence is connected to an plankton bloom in the water known as a “red tide.” Underwater ‘Seahorse Hotel’ unveiled at Birch Aquarium ...

The bright blue, glowing waves are back off Southern California’s coastline, lighting up dark beaches for the past week to the delight of beachgoers who scout out the unusual sight. The ...

A bioluminescent red tide was caught on tape by Scripps scientists as dolphins played in the neon blue surf.

They are brought on from what the experts call a red tide of bunchings of a single-celled marine plankton called dinoflagellate.

Coyne and fellow photographers -- dubbed the "Bio Bros"-- now scour the beaches during red tides, posting the bluest waves they can find and drawing scores of followers to the coast.