Registration of electrical muscle activity with the use of surface electromyography (SEMG) is today already a routine neuro-physiological method. Over the course of a few decades it has moved from the field of the purely experimental to the area of rehabilitation medicine, kinesiology, and sports issues. Together with this trend, interest has begun to deepen in the study of all types of movement patterns stereotypes conducted in a water environment and in a dry environment. This has also opened a new area of electromyographic diagnostics that represents a modification of the basic methodology of surface EMG in a water environment, so-called Water Surface Electromyography -WaS-EMG (Panek et al., 2010). Although current modern technology allows a huge number of computer post-processing of an acquired native recording, a key phase of the actual recording of electrical activity remains in the hands of the experimenter. For these reasons significant attention is paid to the methodology and issue of correct placement and fixing of electrodes in all neurophysiological methods. In general approach, recording an EMG signal in a water environment is no different from the common methodology of surface EMG, but there are certain specifics in that case. Currently, great attention is paid in the literature to the issue of the different effect of water and dry environments on the nature of the EMG recording itself (Kelly et al., 2000; Masumoto et al., 2004, 2008; Rainoldi et al., 2004; Veneziano et al., 2006), and thus on the course of a defined movement stereotype (Kelly et al., 2000; Masumoto et al., 2004, 2005, 2008; Pavlů & Panek, 2008; Hollanderova, 2011; Sladka, 2011). In this work we take up the issue of Water Surface Electromyography (WaS-EMG), both in terms of research and the practical, including a summary of the results of several of our experiments.