This article presents the eighth of a 12-part series exploring the benefits of aquatic therapy and recreation for people with special needs. Here, the authors describe the process of development and installation of an aquatic multisensory environment (MSE) and the many factors that one should consider for a successful result. There are many critical decisions to be made when creating a multisensory aquatic environment, and the results can provide a unique experience that is fun and beneficial for participants.