The purpose of the product design is to target children aged 10-14 when snorkeling, considering that the children's ability to control the body is weak, and the feedback of the body's adaptation to the underwater environment is relatively vague, and it is easy to lose force. Considering that children's grip strength is relatively developed, they will subconsciously grasp the objects at hand in dangerous situations, and because the strength of their control over the body cannot be estimated, they are prone to danger, finally, it was decided to design this booster, which can help children to carry out more labor-saving snorkeling and ensure the safety of children to a certain extent. The whole is mainly streamlined, supplemented by two sets of propeller design. When performing snorkeling, hold the propeller and press the switch to turn on the propeller to generate propulsion, providing safety for children who are first exposed to this movement while achieving a more labor-saving and quick experience. The appearance is bionic design for flying fish, rays and dolphins. The overall streamline reduces underwater resistance, and the shape is round to prevent cuts.