You mustn't eat or drink in the pool. You must take a shower before entering the pool. You mustn't swim under the diving board. You must look before you dive. You mustn't push or splash. You must take swimming lessons. You should swim with a friend. You have to have your own swimsuit. You must have underwater glasses and а rubber hat.You don't have to have rubber swimming shoes. You musn't run and shout at the swimming pool area.