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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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