While documenting leopard seals in Antarctica for a 2006 National Geographic magazine story, photographer Paul Nicklen had an experience that he says "will stay with me forever" (see Nicklen's photos) ...

Leopard seals are an abundant species of predator in Antarctica. These large, carnivorous sea mammals live in the water and around the ice of one of the most unfriendly and harshest environments on ...

Martin and Chris with their Penguin powers do a little swimming. Under the water the brothers watch Penguins hunt for fish. They talk about the Predators of the pengusin the Leopard seal and Orca, ...