The primary objective of water polo is to score goals by throwing the ball into the opponent's net, similar to other team sports like soccer or basketball.

Each team in water polo consists of 7 players, including the goalkeeper, who are allowed to be in the water at any given time.

A water polo match is divided into 4 quarters, each lasting 12 minutes, with short breaks in between.

A water polo ball is slightly larger than a tennis ball, typically measuring around 7.25 inches in circumference.

The goalkeeper in water polo is responsible for defending the goal and preventing the opponent from scoring by blocking shots and retrieving the ball.

A foul in water polo typically results in a free throw, where the non-fouling team is awarded a free shot at the goal.

A player in water polo is allowed to commit a maximum of 3 fouls before being ejected from the game.

The Fédération Internationale de Natation (FINA) is the international governing body for water polo, overseeing competitions and setting rules and regulations.

Hungary is widely regarded as the most dominant country in men's water polo, having won the most Olympic gold medals and world championships.

The United States is considered the most dominant country in women's water polo, having won the most Olympic gold medals and world championships.

The FINA Water Polo World League is an annual international water polo competition for men's national teams, organized by FINA.

The FINA Women's Water Polo World League is an annual international water polo competition for women's national teams, organized by FINA.

The LEN Champions League is the most prestigious water polo club competition in Europe, organized by the Ligue Européenne de Natation (LEN).

The National Collegiate Athletic Association (NCAA) Men's Water Polo Championship is the most prestigious water polo club competition in the United States, contested annually by college teams.

The Australian Water Polo League (AWPL) Men's Championship is the most prestigious water polo club competition in Australia, contested annually by professional teams.