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Extras

    Video thumbnail: Nature Ocean Giants "Giant Lives" - Preview

    Nature

    Ocean Giants "Giant Lives" - Preview

    Airs Wednesday, March 28, 2012 at 8:00 p.m. ET/PT. Check your local listings.

    Ocean Giants "Giant Lives" - Preview

    Video thumbnail: Nature The Humpback Mating Marathon

    Nature

    The Humpback Mating Marathon

    A group of humpback males compete for the affection of a female.

    The Humpback Mating Marathon

    Video thumbnail: Nature The Oldest Mammal on the Planet

    Nature

    The Oldest Mammal on the Planet

    Living up to 200 years, Bowhead Whales are one of the oldest animals on the planet.

    The Oldest Mammal on the Planet

    Video thumbnail: Nature Visit from an Infant Sperm Whale

    Nature

    Visit from an Infant Sperm Whale

    An infant sperm whale, separated from its mother, approaches cameraman Doug Allan.

    Visit from an Infant Sperm Whale

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