Hi.  Do you know about Lifeguards
I have never worked as one, but I know you have to be a really strong swimmer and know a lot about first aid.
Lifeguards are strong swimmers and trained in CPR/AED first aid, certified in water rescue using a variety of aids and equipment depending on requirements of their particular venue
Some lifeguards work within a venue like a pool or a lake or a section of beach, but others are part of a larger rescue organization for a region.