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What Is Water Polo?

Water polo is a team sport played in a pool where two teams of seven players (six field players plus a goalkeeper) try to throw a ball into the opposing team’s goal. Players can’t touch the bottom of the pool, can’t use two hands on the ball (except the goalkeeper), and spend the entire game swimming, treading water, and physically battling opponents. It’s been called the most demanding sport in the world, and frankly, the people who call it that have a point.

The Basics

Each game consists of four eight-minute quarters of active play (the clock stops during dead balls, making actual game time about an hour). Teams switch ends after each quarter. The ball is roughly the size of a volleyball but heavier and grippier, designed to be handled with one hand while treading water.

Possession — Teams have 30 seconds to attempt a shot or they lose possession. This shot clock ensures continuous action and prevents stalling.

Fouls — Water polo has ordinary fouls (resulting in a free pass) and exclusion fouls (the offending player is removed for 20 seconds, creating a power play — similar to hockey). Five personal fouls result in ejection from the game. Major fouls (violence, interfering with a clear goal-scoring opportunity) can result in immediate ejection plus a penalty shot.

Goals — The goals are 3 meters wide and 90 centimeters high. Goalkeepers can use both hands and can stand if they can touch the bottom (though in regulation pools, they can’t). Shots are taken with one hand, often from 5-7 meters away, and the best shooters can fire the ball at over 50 mph.

What Makes It So Physically Demanding

The cardiovascular demands are extraordinary. Players swim an estimated 1.5 to 3 kilometers per game — not in smooth, efficient laps but in explosive bursts of sprinting interspersed with treading water, wrestling, and rapid directional changes.

The eggbeater kick is the foundational skill. Instead of the flutter kick used in swimming, water polo players use alternating circular leg movements that keep them stable and elevated in the water with their hands free. Maintaining this kick for an entire game while also sprinting, wrestling, and shooting requires leg endurance that few other sports demand.

Below the surface, water polo is a full-contact sport that referees can barely monitor. Grabbing, holding, pulling swimsuits, kicking, and underwater wrestling are constant. Players develop bruises, scratches, and the occasional bite mark (yes, really) in every game. The portions of play invisible to spectators and officials are considerably rougher than what happens above the waterline.

The Positions

Center forward (2-meter player) — Positioned directly in front of the opposing goal, about 2 meters out. This player receives passes with their back to the goal and either shoots, draws fouls, or distributes to open teammates. Physically the most demanding position — the center forward is constantly wrestling with a defensive counterpart (the center back) while treading water.

Wings — Positioned on the flanks, wings create shooting angles and drive toward the goal during attacks. Speed and shooting accuracy from the perimeter are essential.

Point — The player at the top of the offensive formation, roughly 5-7 meters from goal. Often the primary ball handler and distributor, similar to a point guard in basketball.

Center back (2-meter defender) — Defends the center forward. This position requires size, strength, and the willingness to engage in physical wrestling while treading water. It’s the most physically combative position in the sport.

Goalkeeper — The last line of defense, positioned in front of the goal. Goalkeepers can use both hands, can touch the ball with a clenched fist, and need explosive reflexes to block shots traveling at 40-50+ mph from close range.

Olympic History

Water polo is one of the oldest Olympic team sports, appearing at the 1900 Paris Games. Men’s water polo has been in every Summer Olympics since. Women’s water polo debuted at the 2000 Sydney Games.

Hungary has been the dominant force in men’s Olympic water polo, winning nine gold medals. The 1956 Melbourne Olympics featured the “Blood in the Water” match between Hungary and the Soviet Union — played just weeks after Soviet tanks crushed the Hungarian Revolution. The match was violent (Hungarian player Ervin Zador was hit in the face, leaving the pool with blood streaming from a cut), and Hungary won 4-0. It remains one of the most politically charged sporting events in history.

The U.S. women’s team has been dominant in recent Olympics, winning gold in 2012, 2016, and 2020.

Where It’s Popular

Water polo is most popular in European countries with strong swimming traditions — Hungary, Serbia, Croatia, Montenegro, Italy, Spain, and Greece are consistently competitive internationally. Australia and the United States have strong programs as well.

The sport struggles for mainstream visibility in most countries, partly because pool-based sports are difficult to televise effectively (the action happens both above and below water, and pool reflections create visual challenges) and partly because the rules can be confusing for newcomers.

At the college level, water polo is primarily a West Coast sport in the U.S. — Stanford, UCLA, USC, and UC Berkeley are perennial powerhouses. The sport acts as a significant pathway to the national team.

Getting Started

If you can swim comfortably, you can learn water polo. Most clubs welcome beginners and teach the eggbeater kick, passing, and shooting fundamentals before introducing game play.

The fitness benefits are substantial — water polo provides a full-body workout that builds cardiovascular endurance, strength, and coordination without the joint impact of land-based sports. The water’s buoyancy makes the sport accessible to people who might find running or court sports hard on their bodies.

Fair warning: the first few sessions will be humbling. Treading water with the eggbeater kick while trying to handle a ball is genuinely difficult for beginners. But the learning curve is rewarding, and the team aspect — where every player depends on every other player — creates bonds that water polo communities are known for maintaining for decades.

Frequently Asked Questions

How deep is a water polo pool?

Official water polo pools must be at least 1.8 meters (about 6 feet) deep, and competitive pools are typically 2 meters (6.5 feet) or deeper. Players cannot touch the bottom during play. They must tread water constantly, which is why water polo is considered one of the most physically demanding sports. The playing area is 25-30 meters long and 20 meters wide.

Can water polo players touch the bottom of the pool?

No. Players are prohibited from touching the bottom or sides of the pool during play. They must tread water continuously using a technique called the 'eggbeater kick,' which allows them to maintain a stable, elevated position while keeping their hands free to handle the ball, block shots, or wrestle with opponents.

Why is water polo so exhausting?

Players swim approximately 1.5 to 3 kilometers per game while also treading water, wrestling with opponents, throwing and catching a ball, and sprinting repeatedly. The eggbeater kick alone is energy-intensive. Heart rates during matches average 75-85% of maximum and frequently spike to 95%+. Studies have compared water polo's cardiovascular demands to those of elite distance running, but with the added challenge of full-body contact in water.

Further Reading

• USA Water Polo
• FINA — World Aquatics
• Olympic.org — Water Polo