Recently released video footage supports the Sea Shepherd's claim that the Japanese whaling fleet has taken aggressive action against one of its ships.
The video below from Russia Today shows how the Japanese boats sandwiched the much smaller vessel, The Bob Barker, which was sent out to prevent the capture of whales in the Antarctic.
The Japanese claim that their annual whale hunt is for scientific purposes and is therefore legal under the International Whaling Commission's moratorium.
The Sea Shepherd Society, which was founded by former Vancouverite Paul Watson, takes a different view.
Japan claims that The Bob Barker was interfering with refueling.
The Sea Shepherd Society, on the other hand, has characterized the Japanese ships' actions as an "assault", claiming that the Japanese crew threw ice at people onboard The Bob Barker.