Japan has a radioactive waste problem – more than 1.3 billion litres of radioactive water that has been used to cool the wreck of the Fukushima nuclear reactors. This Fukushima water (Fuku-water) is now stored on-site in tanks (Fig.1).The Fuku-water has been accumulated by Japan over the past 12 years – since three nuclear reactors of the Fukushima Daiichi Nuclear Power Plant “went into meltdown” in 2011; there are now more than 1.3 million tonnes of contaminated water (circa 1.3 billion litres). There is a proposal that Japan will ‘dispose’ of its Fuku-water problem by pumping it into the Pacific Ocean over forthcoming decades [1]. There is pushback to this plan from Japan’s fishing communities, and neighbours, including China, South Korea, North Korea, and island nations of the Pacific.