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A Polar bear with her cub on the ice in the Arctic.

A Polar bear with her cub on the ice in the Arctic.
A Polar bear with her cub on the ice in the Arctic.
A Polar bear with her cub on the ice in the Arctic.
A Polar bear with her cub on the ice in the Arctic.
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340242
Linder, Christopher
A Polar bear with her cub on the ice in the Arctic.
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05/09/2008
graphics/oceanusV46n2/Polarbear_ChrisLinder.jpg
Image of The Day caption:
Scientists who visit the Arctic sometimes see the region's most famed inhabitants: polar bears. Photographer Chris Linder saw this mother and cub from the U.S. Coast Guard ice breaker Healy during an expedition in 2009 to the Bering Sea. Each year, polar bears find less sea ice from which to hunt seals, their primary source of food. To find out why, WHOI scientists are studying the retreat of sea ice caused by global warming.
Caption from Oceanus magazine, Vol. 46, No. 2, Pg. 30:
WHOI biologist Hal Caswell and colleagues showed that as Arctic ice diminishes, polar bear reproduction rates become too low to maintain the population.
Photo by Chris Linder
© Woods Hole Oceanographic Institution
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