West Indian Manatee (Trichechus manatus)

Manatees are shaped much like seals or small whales, with a flat bristly snout, front flippers, and a rounded, paddle-shaped tail. They are solid gray, about 10 feet long (3 m) and weigh 1,000 - 2,000 pounds (450 - 900 kg). Exceptionally large ones may reach 12 feet (4 m) and 3,000 pounds (1,365 kg).

The link address is: http://warnell.forestry.uga.edu/service/library/index.php3?docID=101&docHistory%5B%5D=5&docHistory%5B%5D=202&docHistory%5B%5D=364