Invasion of the killer whales /

A remarkable new story is unfolding in the Arctic. As the ice melts and polar bears struggle to survive, another animal is taking over the polar bear's once dominant role as top predator. An ever-increasing number of killer whales are appearing in Arctic waters. As the polar bear's world i...

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Bibliographic Details
Other Authors: Leith, Brian (Producer), Wallis, Ben (Screenwriter, Director)
Format: Unknown
Language:English
Published: [Arlington, Virginia] : PBS, [2014]
Subjects:

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Duke University

Holdings details from Duke University
Call Number: DVD 34521