National Geographic unveiled its Pictures of the Year. Here are 7 of the most stunning wildlife photos.

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Field specialists examine a North Island brown kiwi.
Field specialists examine a North Island brown kiwi.

Robin Hammond/National Geographic

Stunning video shows Antarctic killer whales appearing to use icebergs as scratching posts, possibly to exfoliate their skin

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image of orcas swimming in antarctic waters
Orcas in Antarctica, photographed in 1981.

Wolfgang Kaehler/Getty Images

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