A Water Safety Instructor (WSI) is a trained professional who teaches individuals how to swim and promotes water safety. They are certified to instruct swimming lessons and provide education on preventing drowning and other water-related accidents. WSIs often work in community pools, schools, and recreational facilities. To become a WSI, candidates typically complete a course that includes both theoretical knowledge and practical skills. This training covers topics such as CPR, first aid, and effective teaching methods. WSIs play a crucial role in ensuring that people of all ages can enjoy water activities safely.