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 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. Excluding the goalkeeper, players participate in both offensive and defensive roles. It is typically played in an all-deep pool where players cannot touch the bottom.

A team sport is a type of sport where the fundamental nature of the game or sport necessitates the participation of multiple individuals working together as a team, and it is inherently impossible or highly impractical to execute the sport as a single-player endeavour. In team sports, the cooperative effort of team members is essential for the sport to function and achieve its objectives. The objective often involves teammates facilitating the movement of a ball or similar object in accordance with a set of rules in order to score points. Examples are basketball, volleyball, rugby, water polo, handball, lacrosse, cricket, baseball, and the various forms of football and hockey. These sports emphasize teamwork, strategy, and coordination among team members while competing against opposing teams to achieve a common goal. Team sports do not include individual or individual-to-team events within a sport.