Water is a truly unique environment. It allows us to work safely with clients of all ages. We have had contact with it from the very beginning of our existence. After birth, our world changes dramatically, but thanks to the miraculous properties of water and various techniques of working with the body, we can restore a part of this magic. Thanks to the activities of familiarizing children with water, we adapt them to the aquatic environment, we adapt their visual, auditory and tactile receptors to the different conditions under which the acquisition of new motor skills happens. Exercises in water have an extremely positive effect on the physical development of children of all ages. However, an important role in this journey belongs to the trainer. It is him who manages the activities and chooses games and exercises respectively. Properly conducted lesson of swimming requires good knowledge of the students, that is to say, children under our care, influence, impact. This knowledge should pertain to the somatic as well as psychomotor side, together with the knowledge of the changes occurring in the body under the influence of specific exercises that take into account the development and mobility of young children. This is why during the instructors’ training, SAF AQUA® team puts very high emphasis on acquisition of these elements by the trainees.