Watch: Surfers glide on bioluminescent waves
The stunning waves are glowing extra bright this year.
Bioluminescent waves generated by a red tide stretching from Baja California to Los Angeles, have been putting on a natural light show for Californians this week.
The video above was captured by scientist Dr. Michael Latz, a scientist at Scripps Institution of Oceanography at UC San Diego.
He told Storyful the bloom started in late March and it's an unusually large one.
Red tide is caused by a bloom of a type of plankton called dinoflagellates. The glow is a natural defense it employs to deter predators.
Scientists call the event a "red tide" because the microorganisms appear red during the day. They glow at night because they're disturbed by the waves.
“Our local red tides can last for days, one to two weeks, or one or more months,” Latz said.
“There is no way to predict how long they will last.”