. >> reporter: kandu says it would be difficult to dispel international concern unless the governmentnd tepco reveal not just radiation data but also the way it was collected. >> translator: radioactive substances still remain in the sedimentary soil under the sea. we still don't know how harmful it is. the situation is better than on the land, but the concerns of people in other countries are quite understandable. we need more transparency and research. once we obtain credible data, we must share them with other countries immediately. that's the only way we can regain their trust. >> reporter: kanda says the extent of radioactive contamination in the ocean remains largely unknown. he says the japanese government has a responsibility to research every possible aspect of the situation. kanda believes the only way the japanese government can restore international confidence is to conduct a thoroughtudynd disclose the results to the world. >>many trist to japan say they love th food but for muslim visitors, following islamic dtary guidelines is not always easy. bit by bit restaurant mana