I often write about how original and awesome the Japanese are. Here’s more proof. The Enoshima Aquarium in Kamakura (south of Tokyo) has a unique holiday tradition that they’ve been observing for the past five years: using an electric eel to light a Christmas tree.

That’s right—one electric eel in a tank is able to generate enough power to keep a two meter tall Christmas tree festivally glowing. It’s all part of the aquarium’s efforts to promote eco-awareness and highlighting alternative forms of clean energy.

This year the aquarium also added a robot Santa Claus that can sing and dance and is powered by human energy–visitors step on a pad that’s hooked up to ole’ Saint Nick.

A Merry Green Christmas indeed!