Algae — United States
In southwest Florida, toxic algae blooms have painted its normally bright blue coastal waters a rusty red. This so-called red tide has killed hordes of marine animals and is entering its 10th month of existence, making it one of the longest-lasting cases documented to date.
Red tides occur across the globe and are caused by a variety of algal species. The microorganism behind Florida’s outbreak is _Karenia brevis_, a marine dinoflagellate that releases brevetoxins, neurotoxic compounds
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