Greenpeace activists peacefully confront marine operations at the heart of Thai Union’s supply chain. The action is the latest in a series of global protests against the tuna giant’s destructive fishing practices. Activists in inflatable boats deliver a cease and desist letter to the deck of the Explorer II, a supply vessel using an underwater seamount to perch on and contribute to massive depletion of ocean life. Activists hold a banner reading "Not Just Tuna."