Life in the Freezer

The Big Freeze (1x5)

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This episode shows the lives of animals in Antarctica when the ice has frozen over at the end of summer. During the Antarctic winter, conditions are so extreme that most animal life deserts the region. The few exceptions include emperor penguins, which huddle together as storms rage, and Weddell seals, which maintain holes in the ice for access to an underwater world in which fish survive by having natural antifreeze in their blood.