The sport that uses a net and a ball in teams of six is volleyball. In this game, two teams of six players each compete to send a ball over a high net, aiming to score points by landing the ball in the opposing team's court. Volleyball can be played both indoors and on the beach, with variations like beach volleyball featuring two players on each side. Teams switch positions after each set, and matches can be played in a series of sets, typically played to 25 points. Volleyball emphasizes teamwork, communication, and strategy for success.