Apparently the Japanese are a bit overzealous about conservation, or perhaps the "green" message got lost in translation. All I know is that in the Tokyo zoo's best efforts to go green by conserving water, things turned green. They received the message "use less water" and applied it religiously, forgetting to notice the superfluous amounts of algae spawning in the polar bears' bath. Voila green polar bears. A breed all their own.