The San Diego County beaches are again red thanks to the massive numbers of algae called dinoflagellates in the area, which discolor the water. Swimming and surfing during the red tide are not recommended as these might cause irritation.
However, the beaches are a sight to behold at night, as the waters glow bright blue in the evening. This is due to the bioluminescent property present in the dinoflagellates. This property is a defense mechanism, which activates when approached by other organisms or when breaking waves.
Patrick Coyne has been photographing the bright blue seas in San Diego. One of the many moments that he captured was this clip of dolphins swimming through the waves. Coyne, a professional photographer, has always been passionate about the blue waves. In 2021, he took a video of his friend with a dog named Balto swimming in the glowing waters.
(Image Credit: Patrick Coyne via NBC San Diego)
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