Nature

New on 500px : Polar Bear battle by gschneiderphoto by gschneiderphoto

Two adult polar bears (Ursus maritimus) fight near the Arctic Ocean just prior to ice formation and freezeup. via Tumblr http://bit.ly/1Q7n7o7
Nature

New on 500px : Aurora over Tracks by DaryllJohnVispo by DaryllJohnVispo