It's common in Florida and the Gulf of Mexico, according to FWC. Red tide is caused by a higher-than-normal concentration of the algae Karenia brevis. The red tide toxins can accumulate in filter-feeders such as oysters, mussels and clams, which can lead to neurotoxic shellfish poisoning in people who consume contaminated shellfish, according to the Florida Department of Health. Respiratory irritation (coughing, sneezing)īrevetoxins also can affect the central nervous system of fish and other vertebrates, causing them to die.For people with severe or chronic respiratory conditions, such as emphysema or asthma, the toxins can cause serious illness.Īccording to the Centers for Disease Control, breathing in sea spray or getting into water containing brevetoxins can cause such symptoms as: Where is Karenia brevis now? Is red tide harmful to humans?
A high level is hit when cells per liter are more than 1 million.Īs of March 1, nine sites between between North Naples and Venice had high levels of Karenia brevis. Is red tide on Florida's east coast? Scientists not concerned about red tide detected near West Palm Beach - yetįish kills and breathing problems can start when levels reach 10,000 cells per liter, at which point the FWC issues a low designation for the site where the sample was taken.Ī medium designation is issued when cells per liter range from 100,000 to 1 million. Water samples taken along Southwest Florida coasts show levels of the algae associated with red tide - Karenia brevis - range from 10,000 cells per liter to more than 1 million cells per liter.ĭead fish: Red tide numbers strong as fish kills reported throughout Naples-Collier areaĭead eels: The slithery creatures are washing up on Fort Myers, Naples beaches. Petersburg and Naples, according to data from the Florida Fish and Wildlife Conservation Commission. The worst water samples are along Florida's West Coast, between St. With spring break just days away, red tide has been reported in several Florida locations, bringing respiratory problems to some and fish kills to some beach hot spots. Watch Video: Red tide may have killed the dead fish washing ashore in SW Florida
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