Manatees are dying in droves this year. Here’s why the die-offs spell trouble for Florida – CNN

Decades of environmental stress culminated this year in one of the worst manatee die-offs in recent history: As of May 21, at least 749 manatees have died in Florida in 2021, in what has been called an unusual mortality event.
— Read on edition.cnn.com/2021/05/30/us/manatee-deaths-florida-2021-trnd/index.html