Research have found some bears are swimming more than 400 miles to find ice caps
Polar bears are been forced to swim more than 400 miles non-stop in search of ice caps which have not melted, researchers have said.
Bears fitted with Global Positioning System (GPS) were found to have swam non-stop for nearly 10 days while they searched for ice in the Artic.
More than 50 female bears in the Beaufort and Chukchi seas off Alaska were had their movements tracked during a six year period.
The research found 20 of these bears between 2004-09 were forced to swim long distances sometimes for days on end before they were able to find ice caps in the water.
The average distance swam by these bears before they were able to find ice was 95 miles, but one bear swam for 220 miles while another covered 420 miles over the course of days before stopping.
Read more: http://www.ibtimes.co.uk/articles/336793/20120503/polar-bears-swimming-400-miles-ice-caps.htm#ixzz1tunJ0Tk4
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