The U.S. military on Thursday carried out a test involving underwater explosions in the Sea of Japan off Shimane Prefecture, in spite of protests from Japan.
It was part of a series of tests to be held Sunday off Tanegashima Island in Kagoshima Prefecture and in two areas of the East China Sea from Friday to Sunday and Monday to Wednesday, the Fisheries Agency and the Japan Coast Guard said.
The operation began despite calls from Japanese authorities asking the U.S. military to cancel it, given that it is the height of the fishing season for queen crab and squid in the area.