

A whaling protester throws a bottle of butyric acid at the Japanese harpoon whaling ship Yashin Maru No. 1 in the Antarctic Ocean in February. A helicopter from the Sea Shepherd Conservation Society flies overhead. The Japanese whalers countered with a water cannon to blast the conservationists during the clash. Adam Lau/Sea Shepherd Conservation Society/AP/FILE
A fountain releases red colored water at a park in Shanghai, China, in April 2008. The water was colored by environmental activists to raise awareness of the worldwide slaughter of whales. NEWSCOM/FILE
During the last century, more than 200,000 humpback whales were killed by whalers and there are only an estimated 30,000 left in the South Pacific Ocean, where this mother and calf were filmed by Greenpeace in December 2007. Japan has defied international protests and campaigns against whaling, and continues to kill hundreds of whales every year, claiming that it is necessary for scientific study. NEWSCOM/FILE
Members of Animal Liberation Victoria take part in an anti-whaling protest at the Japanese consulate in Melbourne, Australia in this December 2007 photo. Animal Liberation Victoria/AFP/Getty Images/NEWSCOM/FILE
Colored smoke billows from a Japanese whaling ship Kaiko Maru as a protest chase boat shadows the ship in the Ross Sea near Antarctica in February 2007. Sea Shepherd Conservation Society/Reuters/FILE
Anti-whaling protesters demonstrate outside the Icelandic embassy in London in May before handing in a letter of protest to the Icelandic Ambassador. The demonstrators are calling for the nation to end and ban whaling. Shaun Curry/AFP/NEWSCOM/FILE
The Sea Shepherd Conservation Society released this photo of their anti-whaling activists' ship, the Robert Hunter, in Antarctic waters. The Robert Hunter is following the Japanese whaling ship Nisshin Maru (r.). Japan said in January 2008 that it would ask Australia and other nations to refuse port calls for refuling by anti-whaling activists. Sea Shepherd Conservation Society/AFP/NEWSCOM/FILE
Members of Greenpeace participate in an anti-whaling protest in front of the Japanese embassy in Mexico City in December 2008. Contreras/Xinhua/Sipa Press/NEWSCOM/FILE
Australian government customs officials from the Oceanic Viking pulled up to the the Japanese whaling ship Nisshin Maru and the Oriental Bluebird in the Antarctic Ocean in January 2008. The Nisshin Maru was transferring whale meat and fuel from the Oriental Bluebird, a supply ship. Jiri Rezac/Greenpeace/AP/FILE
More than 250 people marched through downtown Anchorage, Alaska, in May 2007 to call for the protection of whales and to protest again Japan and other pro-whaling nations. NEWSCOM/FILE
A anti-whaling group shadows the Japanese whaling boat Yushin Maru in the Southern Antarctic Ocean in January 2008. Sea Shepherd Conservation Socity/AFP/Getty Images/NEWSCOM/FILE
The new Sea Shepherd icebreaker, Bob Barker, sails in this photograph released on Jan. 6. Anti-whaling activists accused Japanese whalers of ramming and sinking one of the Sea Shepherd's boats, the Ady Gil. The Sea Shepherd Conservation Society also unveiled a 1,200 ton, former Norwegian harpoon ship, which was refitted in secret, to help them pursue and block the Japanese whaling fleet from hunting whales. JoAnne McArthur/Sea Shepherd/Reuters
An activist from the Sea Shepherd Conservation society directs a green laser at the Japanese whaling shop Shonan Maru No. 2 on Dec. 23. The activists were on the organization's newly-acquired vessel, the Ady Gil, previously known as the Earthrace, which is a high-speed trimaran known for setting the world record for global circumnavigation. Institute of Cetacean Research/AP
The Sea Shepherd's vessel Steve Irwin sends out a green laser from its deck on Dec. 17 during an encounter with the Japanese whaling ship Shonan Maru No. 2. Institute of Cetacean Research/AP
Sea Shepherd activists are seen with projectile launchers aboard the Ady Gil on Jan. 6 during an encounter with the Nisshin Maru in Antarctic waters. Institute of Cetacean Research/AP
The Sea Shepherd's high-speed, stealthy powerboat Ady Gil is seen along side a Japanese whaling fleet on Jan. 6. The Sea Shepherd said the Ady Gil was cut in half by the Japanese Shonan Maru No. 2. Institute of Cetacean Research/AP
The Japanese whaling ship Shonan Maru No. 2 uses a water cannon against the anti-whaling group the Sea Shepherd Conservation Society's flagship, Steve Irwin, on Dec. 22 in the Antarctic Ocean. Barbara Veiga/Sea Shepherd Conservation Society/AP
Activists on the Sea Shepherd's Ady Gil are fired upon with a water cannon by Japanese whalers on the Shonan Maru No. 2 during a clash in the Antarctic Ocean on Jan. 6. The Ady Gil reportedly collided with the Shonan Maru, was cut in half, and began taking on water, on Wednesday. The boat's six crew members were safely rescued. Institute of Cetacean Research/AP
Activists and the Sea Shepherd's Ady Gil are splashed with waters after the boat collided with the Japanese whaling ship Shonan Maru No. 2 on Jan. 6. The clash is is the most serious in the past several years between the two sides. Institute of Cetacean Research/AP