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...
Other Authors: | , |
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Format: | Unknown |
Language: | English |
Published: |
[Arlington, Virginia] :
PBS,
[2014]
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Subjects: |
Internet
This item is not available through BorrowDirect. Please contact your institution’s interlibrary loan office for further assistance.Duke University
Call Number: |
DVD 34521 |
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