Stunning waves containing bioluminescence delighted beachgoers in Laguna Beach, California, on March 18. Mark Girardeau filmed as waves illuminated by the light-emitting algae washed up on the shore. He said: "It's been just about a year since we had bioluminescent waves here that lasted one month and was the first time it's been seen that good in about 20 years, this is only the second time I've ever seen it."