How do you compete in swimming?
You can join a local swim team. There are two kinds. For people who want to become good swimmers and are not that good at it, i would recommend doing a summer swim team, but if you are good and have been on the summer swim team, then join a year round swimming team. a web site i would recommend going to is www.usaswimming.org they have a lot of year round swim teams you can join.