Tokyo has urged Beijing to “ensure the safety of Japanese residents in China” after a wave of telephone harassment targeting businesses in Japan sparked by the controversial discharge of Fukushima wastewater.
While Japan insists the release of the treated water is safe - a view backed by the UN’s nuclear watchdog - China has staunchly opposed it and banned all Japanese seafood imports, saying it contaminates the ocean.
The Japanese government on Sunday (Aug 27) published new data showing waters off Fukushima continued to post radioactivity levels well within safe limits.
There are quantities of non-tritium radioactive isotopes in the water: https://www.science.org/doi/epdf/10.1126/science.abc1507
These can and do bioaccumulate in fish, but it’s unknown whether it is significant enough to cause harm… But there is nonzero risk.