To (2) polar bears swam ashore to Greenland Ferbruary 2013. They found food (seal meat) in a storeroom in Narsarmijit, a small place in Southern Greenland. They behaced peacefulle, but were shot to death, so they should not return ...
As ice is melting in the polar ocean more bears can swim ashore, to places they did not use to be. Governments in countries around the polar ocean have to develop preparednes, and try to keep alive the endangared animals.