A polar bear jumps into the water at the St-Felicien Wildlife Zoo in St-Felicien, Quebec. According to Environment Canada, Canada is home to around 15,000 of the estimated 20,000 polar bears in the world. The U.S. (Alaska), Russia, Denmark (Greenland) and Norway are the other four countries where polar bears can be found. (Mathieu Belanger/Reuters) Click image to zoom.