Living thing have the ability to dynamically adapt their motion to an unknown environment. It is considered that a common pronciple of Realtime Environmental Adaptive Motion Ability(REAMA) is Implicit Control Law. Thus, an understanding of Implicit and Explicit Control Law is necessary to understand the REAMA of living things. In this paper, the behavior of a Swiss Robot is discussed. The Swiss Robot shows interesting behavior through the interaction of its very simple Explicit Control Law, mechanical systems and environment. To investigate the phenomena in more detail, simulation model was developed. The Implicit Control Law of a Swiss Robot is investigated by comparison of the result of experiments with that of simulations.