Southern Stingray

The Southern Stingray is a ray commonly found in the waters of the Atlantic ocean, ranging from as far north as New Jersey and as far south as Brazil. It grows up to 6 ft (2 m) from wingtip to wingtip, and can weigh as much as 300 lbs (136 kg).
They have a "typical" ray shape, consisting of a flattened disc-shaped body. They are a brown-gray on the top of the body, and are white on the underbelly. Their eyes and gill slits (called spiracles) are dorsal, while the mouth is ventral. They also have a whip-like tail armed with a barb, though this is only used in self defense

• In the wild, they have few natural predators, except fro the occasional large shark. They feed of a diet of small crustaceans, small fish, and clams.
  Dasyatis americana, Southern Stingray - MarineBio.org. Retrieved Wednesday, July 2, 2008, from http://marinebio.org/species.asp?id=521.
  
• National Aquarium in Baltimore. "Animal Index: Southern stingray
  Dasyatis Americana." http://www.aqua.org/animals_southernstingray.html