The echo of waves slamming against a rocky shore or a sandy beach is a soothing sound. Did you know that it's also an energetic sound? Kinetic energy is the energy of movement, and rushing water is brimming with it. That's because wave motion is fueled by the wind and oceanic geology [source: Union of Concerned Scientists].
Engineers and scientists have come up with a variety of devices to harness the hydrokinetic energy generated by waves. In fact, scientists say if we could extract only 15 percent of the energy along the U.S. coast (specifically the West Coast), the United States could generate as much electricity as all the hydroelectric dams in the nation [source: Union of Concerned Scientists].