Paul Franklin Watson is a Canadian-American environmental, conservation and animal rights activist, who founded the Sea Shepherd Conservation Society, an anti-poaching and direct action group focused on marine conservation activism. The tactics used by Sea Shepherd have attracted opposition, with the group accused of eco-terrorism by both the Japanese government and Greenpeace. Watson is a citizen of Canada and the United States.

The Sea Shepherd Conservation Society (SSCS) is a non-profit, marine conservation activism organization based in Friday Harbor on San Juan Island, Washington, in the United States. Sea Shepherd employs direct action tactics to achieve its goals, most famously by deploying its fleet of ships to track, report on and actively impede the work of fishing vessels believed to be engaged in illegal and unregulated activities causing the unsustainable exploitation of marine life.