Abstract
Killer whales are the only predator of bowhead whales and are increasingly present in the Arctic. The ecology and population sizes of Arctic killer whales are poorly understood, but targeted research documenting the behavior and demography of these animals and their predatory impact on Arctic endemic marine mammals, including bowhead whales, has intensified in the past 10 years. This work suggests killer whales substantially impact bowhead whales and other Arctic marine mammals, and changing sea ice conditions and/or recovery of killer whale populations after industrial whaling, are reshaping the patterns and intensity of killer whale predation in the Arctic.
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