WHITE ON WHITE.

The article focuses on photographs of polar bears, published in the February 2004 issue of the journal The National Geographic. Invigorated as summer heat yields to autumn chill, polar bears playfully wrestle, which may help them hone fighting skills, tone muscles, and assess the strength of rivals. One photograph shows that an eager bear swimmer braves choppy ice forming near shore in late October. Until the bay freezes, polar bears lounge, fast, and frolic near the town of Churchill, Canada. Like all polar bears, those on Hudson Bay need solid ice as a platform for hunting seals and seal pups, their main prey.