Giant Leopard Seal: friend or foe yo, state your biz

Last year National Geographic photographer Paul Nicklen spent time in Antarctica with the intent to photograph as many Leopard Seals as possible.  Riding along in a zodiac they came across what was said to be the largest Leopard Seal the guide had ever seen.  Nicklen slipped into the water with the alpha predator and captured these incredible images, along with some free dead penguins.