Abraham Trembley studied and experimented with the hydra, a small, fresh water animal, in the eighteenth century. The methods of locomotion used by this simple animal are complex, giving evidence for an intelligent Designer. An overview of Trembley’s discoveries and experiments is presented. Also included is a discussion of his outstanding methodology, as a result of which he is today regarded as the "father of experimental zoology." Trembley’s role as an educator is also considered, as well as the influence of his religion on his work.