[photochemsyn]

Well, it's actually that radionuclides like radioactive strontium and cesium are still present in the wastewater above regulatory standards. These heavy metals bioaccumulate as they have similar characteristics to biological nutrients like potassium and calcium, and so are absorbed into biomass. Successive rounds of predation in the ocean can concentrate these elements in food species like tuna etc.

> In the 10 years since the Fukushima Daiichi nuclear power plant accident, public trust in the government and the power company has suffered. As the decommissioning process will last at least another 30 years or more, the Japanese government should reconsider how it makes decisions about decommissioning and reconstruction. Public concern related to the government’s recent announcement that it will release treated water into the sea is the tip of iceberg. It is the responsibility of the Japanese government and nuclear industry to manage this process successfully on behalf of all citizens of Japan and the world. The accident is not over yet."

https://thebulletin.org/2021/05/whats-wrong-with-japans-anti...