At 0630 Hours, Sea Shepherd Captain Peter Bethune of the vessel Ady Gil, which was sunk by the Japanese security ship Shonan Maru 2, boarded the whaling ship to conduct a citizen's arrest of the skipper of the Shonan Maru 2.
Captain Bethune boarded the whaling ship under cover of darkness from a Jet Ski as the Shonan Maru 2 was traveling at 14 knots in the Southern Ocean. His first attempt failed when he fell into the frigid waters, but despite this the crew of the Shonan Maru 2 failed to see him and he successfully boarded the whaler without detection.
Captain Bethune's breaching the security of the whaling fleet security vessel remained undetected for one and a half hours.
At 0800 Hours, once the sun had risen, Captain Bethune calmly knocked on the bridge wing door, entered the wheelhouse, and presented himself to the Captain of Shonan Maru 2 where he informed the skipper that he was under arrest for the sinking of the Sea Shepherd ship Ady Gil on January 6th, 2010.
All radio communications with Peter Bethune ceased at 0805. The Shonan Maru 2 did acknowledge that Bethune was onboard.
The Sea Shepherd ships Steve Irwin and Bob Barker continue to pursue the Japanese whaling ship Nisshin Maru eastward across the Southern Ocean. The ships are presently south of Australia's Heard Island.