A manatee is held in position on a truck before being transported from Miami Seaquarium where it had undergone rehabilitation due to injuries suffered in the wild,Tuesday, July 17, 2012, in Key Biscayne, Fla. After six months of rehabilitation, three manatees were released Tuesday, near where they had originally been rescued. The leading cause of death for manatees is related to watercraft collisions. (AP Photo/Lynne Sladky)