Storage tanks filled with radioactive water at Daiichi nuclear power station, Okuma, Fukushima Prefecture, Japan. This is the site of the Fukushima Daiichi nuclear disaster. Each blue tank holds one million tonnes of contaminated reactor coolant water. The disaster, on 11th March 2011, was triggered after a magnitude 9.0 earthquake occurred 130 kilometres off the east coast of Japan causing a devastating tsunami. The tsunami damaged the Fukushima Daiichi nuclear power station, leading to the meltdown of three of the nuclear reactors and a leak of radioactive material. It was one of the world's largest nuclear incidents since the Chernobyl disaster of April 1986. Photographed in March 2020.