Florida Manatees Back From The Brink Of Extinction Face New Challenge

In this photo taken Wednesday, Aug. 6, 2014, manatees Juliet, left, and Phoenix, right, swim at the Miami Seaquarium in Key Biscayne, Fla. The U.S. Fish and Wildlife Service is reviewing whether the manatee should be reclassified as a threatened species, which would allow some flexibility for federal officials as the species recovers while maintaining most of the protections afforded to animals listed as endangered. (AP Photo/Alan Diaz)

In this photo taken Wednesday, Aug. 6, 2014, manatees swim at the Miami Seaquarium in Key Biscayne, Fla. The U.S. Fish and Wildlife Service is reviewing whether the manatee should be reclassified as a threatened species, which would allow some flexibility for federal officials as the species recovers while maintaining most of the protections afforded to animals listed as endangered.(AP Photo/Alan Diaz) (AP2014)

In this photo taken Wednesday, Aug. 6, 2014, caretaker Joelle Palmer, foreground and intern Ally Levy, background, feed the manatees at the Miami Seaquarium in Key Biscayne, Fla. The U.S. Fish and Wildlife Service is reviewing whether the manatee should be reclassified as a threatened species, which would allow some flexibility for federal officials as the species recovers while maintaining most of the protections afforded to animals listed as endangered. (AP Photo/Alan Diaz) (AP2014)

In this photo taken Wednesday, Aug. 6, 2014, Greg Groff and his daughter Olivia, of Chicago, walk during a visit at the Miami Seaquarium in Key Biscayne, Fla. They noted the pink scars and disfigured tail on one manatee, damage from a boat propeller that left it unable to survive in the wild. Floridas manatees need even more stringent protections than their listing on the federal endangered species list, Groff said, adding that boaters should go elsewhere if they dont like speed limits in waters where manatees swim. (AP Photo/Alan Diaz)

In this photo taken Wednesday, Aug. 6, 2014, manatee Phoenix, foreground, who's tail was disfigured and damaged by a boat propeller, swims at the Miami Seaquarium in Key Biscayne, Fla. The U.S. Fish and Wildlife Service is reviewing whether the manatee should be reclassified as a threatened species, which would allow some flexibility for federal officials as the species recovers while maintaining most of the protections afforded to animals listed as endangered. (AP Photo/Alan Diaz) (AP2014)

In this photo taken Wednesday, Aug. 6, 2014, manatee Phoenix's disfigured tail, damaged by a boat propeller is shown at the Miami Seaquarium in Key Biscayne, Fla. The U.S. Fish and Wildlife Service is reviewing whether the manatee should be reclassified as a threatened species, which would allow some flexibility for federal officials as the species recovers while maintaining most of the protections afforded to animals listed as endangered. (AP Photo/Alan Diaz) (AP2014)

In this photo taken Wednesday, Aug. 6, 2014, manatee Juliet feeds at the Miami Seaquarium in Key Biscayne, Fla. The U.S. Fish and Wildlife Service is reviewing whether the manatee should be reclassified as a threatened species, which would allow some flexibility for federal officials as the species recovers while maintaining most of the protections afforded to animals listed as endangered. (AP Photo/Alan Diaz) (AP2014)

In this photo taken Wednesday, Aug. 6, 2014, a manatee comes up for a breath of air at the Miami Seaquarium in Key Biscayne, Fla. The U.S. Fish and Wildlife Service is reviewing whether the manatee should be reclassified as a threatened species, which would allow some flexibility for federal officials as the species recovers while maintaining most of the protections afforded to animals listed as endangered. (AP Photo/Alan Diaz) (AP2014)