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Historical Florida HAB Events
This section presents information and articles about some of the algal bloom events and red tides that occurred in Florida over the past several years.
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The presence of a red tide in northwest Florida during the fall of 1999 is summarized by date, location, cell counts, and effects.
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A foul-smelling, brown-colored blue-green alga, Lyngbya majuscula, was reported in the Tampa Bay area in June 1999, May 2000, and April 2002.
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This news announcement was released on March 5, 2005, following reports of numerous manatee deaths in southwest Florida. The final report was released on September 20, 2006.
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Areas of discolored water were reported in July 2002 along the east and west coasts of Florida. Informational status reports were updated as of October 3, 2002.
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An area of discolored water, called "black water," was reported in January 2002 off the coast of southwest Florida between Naples and Key West. An informational status report was posted on May 4, 2002.
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In June, July, and early October 2003, yellow water, dying crabs, and bleaching coral were observed offshore of Pasco and Hernando counties.
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In early 2002, a dark water event, also called "black water" by the media, occurred off the coast of southwest Florida. Samples of the water, which was described as dark brown-black-green, showed a dominance of large, centric diatoms.
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A dolphin mortality event was initially reported from St. Joseph Bay in northwest Florida in March 2004. By the end of April, dolphin mortalities totaled 107. Dolphin tissues contained elevated brevetoxin levels and trace amounts of domoic acid.
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In May and June of 2004, an area of discolored water was reported off the coast of southwest Florida. Water samples showed high concentrations of Trichodesmium sp., a marine cyanobacterium found worldwide.
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In September of 2007 through January of 2008, a Karenia brevis bloom occurred on the northeast coast of Florida, but it was not the first time.
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