Each year the canned tuna industry kills thousands of sharks, rays, turtles and seabirds. Now that's a dirty little secret. Greenpeace is launching a new campaign to get the canned tuna industry to clean up its act and end its destructive ways.

Have you ever wondered what goes into your can of tuna fish? Turtles, smaller fish, marine mammals and even some species of tuna are at risk from pirate fishing and irresponsible fishery management. As more and more people get an appetite for...