High Quality Content by WIKIPEDIA articles! Rotating locomotion encompasses two distinct modes of locomotion: simple rolling, and spinning relative to a fixed axle or body, in the manner of a wheel or propeller. Several organisms move by rolling, however, despite the integral role that the wheel has played in locomotion of vehicles designed by humans, true wheels do not appear to play any role in the locomotion of biological systems. The reasons for this apparent lack of biological wheels have been expounded on by biologists, and wheeled creatures have appeared in numerous works of speculative fiction.