‘Blue tears’ spectacle shines once again on Southern California’s coastal algae

Recently, the Southern California coast has come alive with the rare natural phenomenon known as “blue tears,” where bioluminescent organisms light up the night. This breathtaking blue glow has captured the attention of countless spectators, turning local beaches into enchanting displays of shimmering light.

The phenomenon is caused by a species of bioluminescent algae called “Lingulodinium polyedra.” These algae react chemically to the movement of the ocean waves, emitting a bright blue light at night that resembles ethereal blue spirits dancing in the surf. During the day, however, the water takes on deep reds, browns, or oranges, presenting a starkly different visual experience. As night falls and the waves roll in, the glow of the blue tears becomes especially pronounced, creating an almost mystical blue world along the coastline.

According to the latest data from the Scripps Institution of Oceanography, despite the scale of this algal bloom, no public health warnings have been issued, allowing visitors to safely explore this extraordinary natural display. However, researchers warn that the appearance of blue tears is influenced by natural conditions such as tides and wind speed, making it unpredictable. They advise potential viewers to remain patient as they await the spectacle.

The phenomenon has been observed along various beaches in Southern California, including Newport Beach, San Clemente, Playa Del Rey, and Ventura. Some onlookers have noted that this occurrence appears different from previous sightings; the blue glow can shift from dazzling to nearly invisible with the ebb and flow of the tide, resembling a shimmering blue curtain floating on the water’s surface. Many tourists are venturing out simply to witness this rare natural spectacle.

Photographer Mark Girardeau, hailing from Newport Beach, captured stunning footage of the event and shared it on social media. In his video, the indigo light dances like liquid across the nighttime shoreline, prompting comments from viewers expressing that it’s the exact vision they have long dreamed of seeing.

One observer shared that they had been yearning to witness the blue tears for years and finally experienced it for an entire week, fulfilling a lifelong dream. This reaction underscores not only the mysterious allure of blue tears but also the public’s eager anticipation for such natural wonders.

Another observer pointed out that the blue tears seem to follow a particular “rhythm,” typically becoming visible around 10 PM and being most vibrant during high tide when they are closer to the shore. They encourage fellow visitors to exercise patience, as it may take some time to see a widespread display of the blue light—an experience so beautiful that it’s hard to believe.

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