During the short Arctic summer months, the sea ice melts as it retreats to the furthest reaches of the North Pole. For polar bears, that means its a tougher go. With the sea ice scattered in chunks, the bears must undergo miles of hunting and swimming to find their prey, seals. When they do, it's an opportunity they can't pass up and require every ounce of energy they can get. Pictured here, two large male polar bears fight over a seal carcass. The battle for survival never seemed so real.