Tuesday, 31 May 2016

Polar bears swim for days as sea ice retreats

Polar bears are excellent long-distance swimmers. Some can travel for days at a time, with only
very short rest stops on ice flows. But even polar bears have their limits. Now a study finds they
are swimming longer distances in years with the least amount of Arctic sea ice. And that worries
Arctic researchers.
Swimming a long time in cold water takes a lot of energy. Polar bears can tire and lose weight if
forced to swim too much. The amount of energy they now must put into traveling in search of food
could make it hard for these predators to survive.
Polar bears are swimming longer distances because of a global warming. This climate change is
causing temperatures in the Arctic to warm faster than in other parts of the world. The result is
more melting of sea ice and more open water.


The climate change is affection a lot in animals specially in polar bears as the ice is
melting and they don't have a fixed place to life. Some polar bears need to swim a whole
week for finding a pice of ice to stay there. This have a lot of consequences as they are
getting very thing and they dye as they don't have food or a place to sleep. This is very
sad but all of this is the fault of humans as me contaminate a lot and we create the
climate change

Berta P. 3º Yellow

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