A river of LED light in Tokyo

Ever wondered what 100,000 solar-powered LED spheres look like floating down a river then wonder no more.

As part of the Tokyo Hotaru Festival held in May 100,000 blue glowing spheres were floated down the river, lighting it as they passed. It was designed to be reminiscent of a swarm of fireflies and to capture the way nature intended to brighten up our surroundings.

Front row tickets were a sell out and the spheres were eventually caught downstream in giant nets, ensuring no pollution. 

What a sight.