China's seafood imports from Japan have fallen sharply due to restrictions imposed by Beijing in response to the release of treated and diluted water from the Fukushima Daiichi nuclear power plant.

The release operation began on August 24. The Chinese government opposes the discharge and instead of calling it "treated water" it uses the term "nuclear-contaminated water."

It is demanding Japan immediately stop the water release and communicate with all stakeholders, including neighboring countries.

Customs authorities in China have tightened import restrictions since July. It has also suspended all imports of Japanese seafood since the start of the discharge.

The value of China's imports of Japanese marine products in August dropped more than 67 percent from the same month a year earlier, to about 3 billion yen, or about 20.2 million dollars.

Protests have become violent as well. Pieces of brick were thrown at the Japanese embassy in Beijing immediately after the discharge in August. There were rumors swirling around that massive protests were being planned in China but as of now no such protests have materialized.

An onslaught of negative reports being broadcast on state-run media have also died down after a month.

But Japanese government sources say the Japanese embassy in Beijing still receives 5,000 to 20,000 prank calls a day.

Tokyo is telling Beijing to deal with the issue.