2009-08-02 Polar Bears #Photo A polar bear jumps into the water in its enclosure on a sunny day at Schoenbrunn zoo in Vienna. enclosure 囲い reference http://news.yahoo.com/nphotos/polar-bear-jumps-into-water-its-enclosure-sunny-day-Schoenbrunn/photo//090729/ids_photos_wl/r1123946934.jpg/