Leopard Seal

  The leopard seal is the second largest seal in the Antarctic. It is most common along the coast of Antarctica and sub-Antarctic islands but they can also be found along southern Australia, New Zealand and other such areas. The leopard seal is quite large, the male generally around 17 feet or 5 meters and weighing around 454 kilograms or a 1000 pounds. It has a lifespan of twenty-six years, possibly more. Killer whales and large sharks are the only natural predators of this formidable seal.
  The leopard seal has an unusual jaw that opens to 160 degrees and allows it to bite large animals. The leopard seal is a curious predator, sometimes playing with penguins that it does not intend to eat. Smaller leopard seals feed on squids and fish while larger ones may prey on penguins, and much less frequently other seals such as carbeater and elephant seals. Sea birds have also been found in leopard seal scat.
  Leopard seals are potentially dangerous towards humans but attacks are rarely reported.