I work as a lifeguard at the beach.
I know a lifeguard watches out for safety and rescue, did you work at the ocean or a pool
I worked at a pool.
you have to be a strong swimmer to be a lifeguard, you must be able to swim really well
Lifeguard
Are you required to have cpr training for your job?
Yes, I had to pass a swim test to be a lifeguard.
Lifeguarding role.
Lifeguarding role Responsibilities.
A lifeguard is responsible for the safety of people in an area of water, and usually a defined area immediately surrounding or adjacent to it, such as a beach next to an ocean or lake. The priority is to ensure no harm comes to users of the area for which they are responsible. Lifeguards often take on this responsibility upon employment, although they can also be volunteers.
The conditions resulting in drowning are summarized by the 'drowning chain' in which each link can
8. Unknown Scenario; students face an unknown scenario in which they will have to successfully rescue at least two casualties from the water. Casualties may be in any condition and safety resources are varied.
9.You can apply for bronze medallion at the age of 12 as long as you have passed the rookie lifeguard course up to gold 3 otherwise you must be 14 
9. Oral Examination; testing knowledge of basic first-aid, diagnosis, water safety etc.
For a description of the Medallion itself see Bronze Medallion