Biribol is the aquatic version of volleyball. Professor Dario Miguel Pedro developed it in Brazil. Biribol is played in a pool, which is about 8 meters in length, 4 meters in width, and 1.30 meters in depth. There is a net in the middle of the pool. The ball used in biribol is similar to the ball used in water polo but smaller in diameter. The game is played with two teams, four players each team, it can also be played by doubles. Just like volleyball, matches are either decided in best-of-three or best-of-five sets of 21 points. The player can use any part of his or her body to touch the ball. Most of the rules are similar to volleyball. One unique quality for biribol is there's no penetration under and over the net. The players are allowed to block a set being executed by the opposing team. There is a Brazilian League for biribol; it is participated by teams from Sao Paulo, Minas Gerais, Goias and more.