A wave power plant, including a floating body and a rotator capable of rotating in response to the body's floating motion, characterized in that two or more bodies are elastically moored at a distance varying from each other according to wave conditions, said distance in the traveling direction of waves being unequal to a half of the wave length or a multiple thereof, and that rotation of the rotators present in various bodies is synchronized so as to provide a desired phase shift between the rotational angles of rotators present in various bodies.