In Pictures: Ueno Zoological Park: Animal Farm

This polar bear is taking time out from pacing and sniffing at tourists to swim. Polar bears look pretty buoyant.

Ueno Zoo was the first zoo to open in Japan. Fittingly, Ueno Park was also the first in Japan as well. The zoo covers 14.3 hectares (35.2 acres) and has over 450 different species in large landscaped enclosures. (Read More: Animal Farm)