Photos posted on social media are capturing the return of the red tide and beautiful bioluminescence tide phenomenon along San Diego County's coastline this month.
PHOTOS: Bioluminescent tide along San Diego's coast
Bioluminescent Waves in San Diego Explained
Glowing waves crash onto California beaches thanks to the red tide
May 2018 Bioluminescent Red Tide in San Diego County
Bioluminescent Waves at California Beaches
Bioluminescence Brings Glowing Blue Waves To San Diego County
Bioluminescence explained: How San Diego's coast lights up
San Diego's Beaches Glow Blue with Dazzling Bioluminescence
Bioluminescent off the coast of San Diego
Bioluminescence from red tide: Algae bloom literally lighting up
Where to watch the bioluminescent waves in San Diego - Axios San Diego
Bioluminescent Tides #3 Photograph by Cameron Franco - Mind Over
The ocean blue: Bioluminescence glows along the La Jolla coast
Dolphins appear to be glowing in rare video footage
Here's How to Experience Bioluminescence in California