This current one stretches from Baja California, Mexico up to Santa Barbara. “In May 2018, the red tide lasted only a few days, while the October 1995 red tide lasted a month. Red tide is a common name for algal blooms, which are large concentrations of aquatic microorganisms, such as protozoans and unicellular algae (e.g. This year, the red tide stretches all the way from Baja California to Santa Barbara.” Most Read Donate Now. dinoflagellates and diatoms). The normal red tides that occur here in San Diego only tend to last about 1-2 weeks and the concentration is usually minimal. In fact, the water changes color in a red tide because the population of algae living in the water becomes so dense. In California the majority of red tides are not caused by species that producedeadly toxins such as domoic acid andthe paralytic shellfish poisoning toxins. Aside from the fact that some beaches are closed right now due to the pandemic (and surfing might be off-limits for a bit in certain areas), when is it not OK to get in the water during a red tide? Yes, the red tide is still here in Southern California. Red tides as a result of L. polyedra have been documented since the early 1900s in California. Massive red tide events only happen once every several years. Almost all bodies of water have some algae, but in a red tide, there is a lot more algae in the water than usual. Sometimes, however, phytoplankton blooms . are formed by toxin producers. Tags: glow, nature, red tide Mike Wehner has reported on technology and video games for the past decade, covering breaking news and trends in VR, wearables, smartphones, and future tech. Therefore it is best to be cautious and assume that a bloom is toxic Bioluminescent waves glow … The coast from Monterey Bay to the Mexican border is experiencing what's commonly known as a red tide event. At this point (5/05/20) the red tide has been present in the waters of So Cal’s beaches for more than 3 weeks. RK: The only organism that could produce a red tide that would be super dangerous would be Alexandrium [which] causes paralytic shellfish poisoning. However, the phenomenon is unpredictable and they don't appear regularly in the region. Beachgoers in California were treated to a rare spectacle this week: glowing tides. Red tides are caused by algae, which are tiny, microscopic organisms that grow in the water. The recent red tide is the strongest in at least a quarter-century, and perhaps the largest on record, Latz said, lasting more than a month and stretching from Los Angeles south to Acapulco.