What is the first action to take if a swimmer is found unconscious?

The most appropriate first action when a swimmer is found unconscious is to check for breathing and start CPR if needed. This step is crucial because it directly assesses the swimmer's condition and ensures that any life-threatening issues, such as lack of breathing or cardiac arrest, are addressed immediately.

By checking for breathing, you can determine if the individual requires cardiopulmonary resuscitation (CPR). If the swimmer is not breathing or has an irregular breathing pattern, initiating CPR can help restore circulation and oxygen flow to vital organs, significantly increasing their chances of survival.

Bringing the person to shore may not be effective until you have assessed their breathing, as moving them without ensuring they are safe can lead to further complications. Similarly, calling their family or performing rescue breaths alone might delay necessary intervention, as it is crucial to first confirm that the swimmer needs CPR to ensure a timely response. Thus, the focus should always start with checking the swimmer's breathing and responding accordingly.