Swimming with the sea cows © Jennifer Adler/Alamy
In observance of Manatee Awareness Month, we"re swimming through a clear Florida river with these friendly "sea cows." Generally solitary animals, they are also known to be curious and will approach boats. That"s why Florida enforces special speed zones for watercraft, particularly as the manatees are on the move to warmer areas to spend the winter. While manatees have no known natural predators, they remain a vulnerable species due to loss of habitat and collisions with boats.