Water polo is a competitive team sport played in water between two teams of seven players each. The game consists of four quarters in which the two teams attempt to score goals by throwing the ball into the opposing team's goal. The team with the most goals at the end of the game wins the match. Each team is made up of six field players and one goalkeeper.

The modern game originated as a form of rugby football played in rivers and lakes in England and Scotland with a ball constructed of Indian rubber. This “water rugby” came to be called “water polo” based on the English pronunciation of the Balti (Tibetic language) word for ball, "pulu".

The rules of water polo were originally developed in the late nineteenth century in Great Britain by William Wilson.

To deal with variations in regional rules, in 1888, the London Water Polo League was founded and approved a set of rules to allow team competition, forming the basis of the present game. The first English championships were played in 1888. In 1890, the first international water polo game was played; Scotland defeated England, 4-0.

More Info: collegiatewaterpolo.org