Japanese and South Korean civic groups gathered in front of the Japanese Prime Minister's official residence on Monday in opposition to the administration's plan to discharge nuclear-contaminated water from the Fukushima Daiichi nuclear power plant into the ocean.

People attending the rally said the Japanese government's insistence on discharging nuclear-contaminated water into the sea is an irresponsible move.

They raised doubts about the Japanese government's claim the nuclear-contaminated water will be diluted before being released. Whether diluted or not, the protesters said, the overall radioactive substance level in the water remain unchanged.