which claim was made? the only claim I see is Japan asserting that it has nothing to do with the radioactive waste they are dumping into the ocean - I say the burden of proof is on them, since that is the claim they are making.
Where are you seeing Japan making that claim? From the article:
> The report noted that dead fish had begun washing ashore almost four months after the plant began discharging the water – which contains small quantities of the radioactive isotope tritium – into the Pacific.
> But no one has been able to confirm the cause. “The cause is unknown at the moment,” Mikine Fujiwara, a local fisheries official, told the newspaper. “We plan to sample the seawater at the site and examine it to uncover the cause.”
