Despite his age, 63-year-old Kazuo Niitsuma believes there are many more years of fishing ahead of him. The sea is in his family's blood, he says. His octogenarian father began working on boats when he was 12, and only retired three years ago. But ... Niitsuma knows he may never again get the chance to board his boat and head out into the Pacific in search of sole, whitebait, flounder and greenling. The greatest threat to Niitsuma's livelihood, and that of other fishermen in Hisanohama ... lies just up the coast at the Fukushima Daiichi nuclear power plant. The environment ministry recently announcement that 300 tonnes of contaminated groundwater from Fukushima Daiichi is still seeping over or around barriers into the Pacific every day, more than two years after it was struck by a tsunami in March 2011. Government officials said they suspected the leaks had started soon after the accident. The admission by the ministry, confirmed by Tokyo Electric Power (Tepco), which runs the plant, is likely to keep Hisanohama's 40 fishing boats in port for the foreseeable future. Tepco's failure to handle the contaminated water - and accusations that it tried to cover up the leaks - is a serious setback to attempts to clean up Fukushima Daiichi, 18 months after the government declared it had reached a safe" state known as cold shutdown. "I haven't been able to fish since the tsunami," Niitsuma said. "People want to be reassured that they are buying fish that is safe to eat, and we can't give them that guarantee at the moment."