Red tide killed 149 manatees in Florida within two and a half months this year,
NBC News reported, and will likely pass the record of 151 manatee deaths set in 1996. The algae bloom currently covers a 70-mile (112.6 km) stretch of the west coast of Florida from Sarasota to Fort Myers. Manatees, which are endangered mammals, congregate there for winter. The algae contain a toxin that disrupts the manatees breathing process when they ingest it.