The remora (Echeneis naucrates; sharksucker), also known as the printhead, suckerfish, and stickleback, is the quintessential free traveler. It often attaches itself to the bellies of large sharks, turtles, whales, or the bottom of boats and travels around the world. When it gets to a place where bait is plentiful, the ? The fish will automatically leave the "free boat" where it is "traveling" to have a meal. And then find a new "boat", continue to travel for free.