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Where orcas appear along the shore, the Valdez Peninsula.

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The Valdez Peninsula juts out into the South Atlantic Ocean in southern Argentina.

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Argentina's largest peninsula is characterized by forbidding cliffs rising 100 meters above the ocean.

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They protect the breeding grounds of endangered species from land-based predators.

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Here, a harem of females surrounds a single male elephant seal.

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They form the animal's largest harem in the breeding season.

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Detecting an intruder, the boss seal threatens it by making a loud noise through his large nose and by flaring his nostrils.

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The seal chases the intruder who tried to seize one of his females.

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Predators also lurk in the ocean. Orcas are marine hunters and even attack and eat whales.

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They quietly approach their prey like a submarine and hit fast.

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The baby seals here are herded on the beach.

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The seawater is stained with blood. A baby seal was a victim.

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April is the autumn season here in the southern hemisphere.

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With their breeding season over, the elephant seals set out to sea for their journey to the Antarctic.

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Another species of mammals arrives to take their place, sea lions.

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The pups are now around three months old and their swimming skills are improving.

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But once the tides start coming in, precautions have to be taken.

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An orca appears.

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Orcas usually wander in the waters around the Valdez Peninsula but come nearer to the shore during the elephant seal and sea lion breeding season.

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Going after a fleeing baby seal pup, the orca comes charging closer.

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It catches a seal in a fraction of a second.

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Its eight-ton body slides onto the beach to grab its prey.

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It skillfully maneuvers its body to return to the sea.

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This unique approach to hunting is only seen among the group of orcas in this area.

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Here on the Valdez Peninsula, the struggle for survival is a part of every day.