In case of a leg cramp, do not panic. Float on your back, bringing your leg to the surface. Rub the muscle with both hands, in a kneading motion. Try swimming slowly back to shore, using a different stroke than the one initially causing the cramp.
A stomach cramp is more serious, usually caused by swimming in cold water on a full stomach. If the pain continues, keep your head above water and shout for help. If it is less severe, attempt to float on your back, taking in slow, deep breaths to relax the muscles. Bending your knees to your chest and extending them again may also reduce the stomach pain.
Do not run around the pool edge. There is a possibility of slipping, getting hurt, and/or falling in.
It is dangerous to dunk people
Be thoughtful of other swimmers. Be careful to not collide with others.
Be careful while using pool equipment.
Be sure to check for others before jumping into the water.
NEVER THROW SOMEONE INTO THE POOL AS A JOKE.
Swimming Open Waters
If you are not sure that the water is safe, do not swim.
Wait an hour after eating, for food to digest.
Never swim if danger flags are flying.
Check the direction of the tide before swimming.
Don’t swim near piers or breakwaters (the currents can be very strong, regardless of the swimmer’s experience.
Stay clear of boats.
Always swim parallel to shore.
Open water is usually much cooler than pool water, be careful not to swim out too far.