"Bioluminescent Waves Illuminate Southern California's Coastline Once Again"

Red tides, caused by an abundance of Lingulodinium polyedra, are being spotted off the coast of San Diego, leading to bioluminescent waves at night. The organisms responsible for the glowing phenomenon are motile photosynthetic dinoflagellates that swim and emit light when physically disturbed. Bioluminescence can be seen in San Diego during the dark hours, preferably in spring to early fall. The red tide is currently reported in the mid to northern areas of San Diego County, and its duration varies from a couple of weeks to a few months. Swimming in bioluminescent waters is generally safe, but the decomposition of the organisms can harm marine life and create discomfort due to the smell and aerosols.