Topping out at 10 feet in length, the one-ton leopard seal is Antarctica's top hunter. Any penguin that doesn't stay with the group risks becoming the seal's meal.
This is one of the Antarctic's deadliest hunters.
With a streamlined body and powerful flippers, it can reach speeds of 14 miles per hour, and turn on a dime.
The seal looks like an aquatic ballerina. Until it opens its mouth to reveal sharp one-inch canines.
The seals' tactics are pretty simple. Swim along the edge of a penguin colony, staying underwater and out of sight.
And there's nothing complicated about the kill either. It grabs a penguin by the feet and repeatedly beats it against the surface.
The seal literally smashes it to pieces. Then it can eat the flesh and the fatty parts, letting the rest float away.