根据提示写一篇英语作文初中水平The long summer holiday is coming my parents and i are going to visit beihai .china .i want to swim there could you please tell me what i should and should't do when i go swimming

Summer holiday is coming. You family will go to beihai in China. During this time, you will swim in the sea. You should notice something.
First,you should take some medicine. You should also take a shower after you swim, because the sea has a lot of salt. You shouldn't swim in the sea for a long time. Remember that eat something before you swim.
Wish you have a good time for traveling.

Firstly,you should take the necessary things with you including swimming glasses,swimming cloth and so on.Secondly,do some warm exercise before you go into the water,this will make your swimming more safely.You should remember not to swim alone in the deep area,it's dangerous.Always be with your parents.finally,take a shower after your swim,because the sea water is salty