The hardline antiwhaling group Sea Shepherd Conservation Society threw bottles containing chemicals at a Japanese whaling ship Thursday in the Antarctic Ocean, the Fisheries Agency said.
The agency said no one on the Yushin Maru No. 3 was injured in the season's sixth round of violent protests, which started at around 8:50 p.m. Japan time and lasted about 40 minutes.
Members aboard a raft lowered from the protesters' ship, the Bob Barker, threw bottles at the whaling ship several times, the agency said. One bottle hit, spreading chemicals on the ship's hull that smelled like butyric acid, it said.
Another protest vessel, the Gojira, obstructed the Yushin Maru by cutting across its path, the agency said.