Polar bear at the San Diego Zoo beats the summer heat July 10, 2003 by enjoying a winter wonderland. Animal keepers created the snow this morning by blowing 18 tons of shaved ice into Polar Bear Plunge, the Zoo's summer tundra habitat. The unseasonably icy treat stimulated play behavior in the bears and is part of the Zoo's ongoing environmental enrichment program. (EDITORIAL USE ONLY) REUTERS/San Diego Zoo