When they aren’t getting hit by boats, which is their number one cause of death, they suffer from crazy guys jumping on their backs or ladies trying to take them for a joy ride. Unusually cold weather can kill off hundreds, as well, as it did in the winter of 2010. Sadly, 2013 has been the deadliest year on record for manatees, due in part to a toxic red algae bloom, which can poison the manatees and other wildlife, causing paralyses and eventual drowning.
In April of this year, 241 manatees had been reported killed due to the algae. Now the number of dead manatees has risen to 769 so far this year, which is a record high.
Learn more: Florida manatees dying in record numbers, 769 dead in 2013