The Polar bear mainly lives off seals, which it catches at the seals’ breathing holes or when the seals are lying on the ice floes. Sea birds, lone musk oxen or stranded whales, however, are also part of its diet, along with plants and herbs during the summer months. The polar bear's diet consists mostly of seals. In winter, polar bears capture these seals by waiting near the seal's breathing hole. When the seal comes up for air, the polar bear grabs it. In summer, the bears sneak up on seals while they're sleeping on the ice ... the bear crawls slowly forward when the seal sleeps. When close enough, the polar bear pounces, killing the seal before it can escape back into the sea.