It is generally accepted that children need physical activity for proper and comprehensive growth and development. It will satisfy the child's need for movement and create the opportunity for a better motor development, which will influence his overall growth. Swimming is one of the basic activities that previous research has shown as a desirable activity for a child to engage in, during development. Different exercises whose aim is to help the child in getting used to water as well as moving through the water lead to specific development of movement coordination, balance and self-control. It is this way of working for a preschooler that gives him/her the opportunity to acquire the motor skills that are required daily in life. The training of non-swimmers itself is of paramount importance in the age of preschool children because by conducting it we ourselves ensure the safety of movement in the water and therefore the safety of life. In the training of non-swimmers in children, we encourage primarily the desire to play, develop basic motor functions and meet the basic needs of life for social skills. The skill of swimming is a fundamentally and utilitarianly important motor knowledge that primarily must protect one's own life, and secondary to satisfy the biological need to move. In training them, it is important that children are free of the fear of water if they have it and are carefully treated through play. Also important is the support of their parents/guardians who need to be their support and motivation to master new skills. In the city of Zagreb, the number of clubs has increased by 50% in the last 5 years, and the main reason for this is the training of non-swimmers and the development of a swimming sports school, which draws swimmers precisely from the base of non-swimmer training. This has certainly contributed to the opening of new swimming pools in the city of Zagreb and its surroundings. According to European water safety reports, Croatia is at the very bottom among European countries in terms of drownings and non-swimmers.