Mirror mirror in the sea...
A polar bear is testing the strength of thin sea ice. Polar bears and their interaction with the cryosphere are a prime example of how the biosphere is able to adapt to an "Active Planet". They are also a prime example of how the anthropogenic influence on Earth's climate system endangers other lifeforms.
Taken on 22
Submitted on 24 February 2016
Credit: Mario Hoppmann (distributed via imaggeo.egu.eu)
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