Swimming is a water based team or individual sport. Competitive swimming is the most popular in the olympics. These are the types freestyle, backstroke, breaststroke and butterfly. Recreation swimming is a popular low impact form of exercise.The styles are having to do with somethings and so free style your allowed to do anything in the water. Butterfly is like flying in the water. Actually the remaining have to do with your body. All of them are backstroke which have to do with your back.Breaststroke which has to do with your breast.