What is the primary function of a lifeguard's whistle?

The primary function of a lifeguard's whistle is to alert patrons of danger and get their attention. This is crucial in an environment where swimmers may not always be aware of safety issues or potential hazards. The sharp, loud sound of a whistle cuts through noise, allowing lifeguards to communicate urgent messages quickly. It serves as an immediate signal for swimmers to pay attention, whether there is a safety concern or an important instruction that needs to be communicated, such as stopping an activity or evacuating the area.

Using a whistle effectively contributes to maintaining safety and order at aquatic facilities. While communication with other lifeguards and signaling the end of swimming hours are important, the primary goal of the whistle is to ensure that all patrons are alerted in case of an emergency. Attracting children to the pool is not a function of the whistle, as the safety of all patrons is the lifeguard's main priority.