A large Soviet vessel, harpoon gun poised to fire, looms over a whale immediately below the bow, the animal's large gaping wound oozing blood into the cold Pacific Ocean.
It's an image that changed the world and marked the beginning of Greenpeace's "mind bomb" campaign, says Rex Weyler, the photographer behind the 1975 photo (click link to see that iconic shot).
Weyler was among the early members of Greenpeace who met in Canada during the 1970s. Many of them, including Weyler, had left the US to escape being drafted for the Vietnamese War. "It's so hard to imagine today but at that time there was no ecology movement," he remembers. "There was the peace movement, the women's movement, the civil rights movement, and we felt there needed to be a conservation movement on the same scale as those."