The region where they live has a strong and homogeneous magnetic field, and their biologic process for vision makes that whenever they are looking at something they develop a net charge.
Thus, being charged objects moving in a magnetic field, they are forced to obey the right hand rule and move counterclockwise due to the Lorentz force.
If a positive electric charge moves across a magnetic field it experiences a force according Lorentz force, with the direction given by the right-hand rule.
Not really because of the net force acting of them, but because of a "feeling right" vibe resulting from the perception of the acting force.