Manatees often die from eating contaminated sea grass — red tides killed more than 50 manatees around Florida last year, while more than 800 of the 1,000-pound beasts were killed by algae blooms in 2013. The preliminary count this year is up to at least 92.
Bird sickened by the algae become weak and unable to stand, get wary of flying, and can develop seizures and dehydration.