Underwater Hockey

Category	Mainstream Sport
Origin	Southsea, England
First Known Play	1954
Typical Participants	Two teams of 6 players in water (10 per squad)
Playing Area	Swimming pool (2-4m deep, 25m x 12-15m)
Primary Equipment	Mask, snorkel, fins, protective glove, stick, lead puck, goals
Governing Body	Confédération Mondiale des Activités Subaquatiques (CMAS)
Olympic Status	Not an Olympic sport
Typical Match Duration	Two 10-15 minute halves, with a 3-minute half-time

Underwater Hockey is a non-contact team sport played by two teams of six players at the bottom of a swimming pool. The primary objective is for players to use a short stick to maneuver a lead-weighted puck across the pool floor and into the opposing team's goal. Players wear a mask, snorkel, and fins, and must hold their breath while submerged to play the puck.

A match is typically divided into two halves, with teams switching ends. Victory is achieved by the team that scores the most goals by the end of regulation time. The sport's unique underwater environment makes it physically demanding, requiring significant cardiovascular fitness, breath-holding ability, and strong swimming technique. It is important for its promotion of aquatic fitness, teamwork, and strategic thinking in a challenging three-dimensional space, offering a distinct alternative to traditional surface-level sports.

Underwater Hockey was invented in 1954 by Alan Blake, a founder of the Southsea Sub-Aqua Club in Portsmouth, England. Blake sought a way to keep club members active and engaged during the cold winter months when open-water diving was less appealing. He devised a game played at the bottom of a swimming pool, initially calling it "Octopush" due to the eight players per side in early iterations.

The sport quickly gained popularity within the British sub-aqua community and began to spread internationally, particularly to Commonwealth countries such as Canada, Australia, New Zealand, and South Africa, where diving clubs adopted the game. The first international competition was held in 1975 in Canada, marking a significant step in its global recognition.

In 1978, the Confédération Mondiale des Activités Subaquatiques (CMAS), the world governing body for underwater sports, officially recognized Underwater Hockey. This recognition led to the standardization of rules, equipment, and playing areas, facilitating more organized international competitions. The first CMAS World Championship for Underwater Hockey was held in Vancouver, Canada, in 1980.

Since then, Underwater Hockey has continued to evolve, with improvements in equipment design, coaching techniques, and player development. While it remains a niche sport compared to mainstream aquatic activities like swimming or water polo, it boasts a dedicated global following and a robust international competition circuit.

Historical Timeline

Year	Development
1954	Alan Blake invents "Octopush" in Southsea, England.
1960s	Sport spreads to Commonwealth countries like Canada, Australia, New Zealand, and South Africa.
1975	First international competition held in Canada.
1978	CMAS officially recognizes Underwater Hockey and begins standardizing rules.
1980	First CMAS World Championship held in Vancouver, Canada.
Present	Continued global growth, regular international competitions, and development of national leagues.

Underwater Hockey is played by two teams, each with six players in the water at any given time, plus four substitutes on the side. The objective is to score goals by pushing a lead-weighted puck into the opponent's goal trough, which rests on the bottom of the pool.

The game begins with the puck placed at the center of the pool. Players start at their respective ends, touching the wall. At the referee's signal, they race towards the puck. Gameplay is continuous, with players diving to the bottom to gain possession of the puck, propel it with their stick, and pass it to teammates. When a player needs to breathe, they surface, take a breath, and then dive back down to rejoin the play. Substitutions are "flying," meaning players can enter and exit the water at any time from a designated substitution area.

Player roles are fluid and often depend on the immediate situation, but generally include offensive players (forwards) who focus on attacking the opponent's goal, and defensive players (backs) who protect their own goal. Goalkeepers are typically the most experienced defensive players, positioned near their goal to block shots. The three-dimensional nature of the game means players can attack or defend from above, below, or alongside the puck.

A typical match consists of two halves, each lasting between 10 and 15 minutes, separated by a 3-minute half-time break. The clock stops for penalties or injuries. The team that scores the most goals by the end of the second half is declared the winner. If scores are tied in elimination rounds, extra time or a penalty shootout may be used to determine a victor.

The rules of Underwater Hockey are designed to ensure fair play, safety, and a continuous flow of action. The game is officiated by three referees: two in-water referees (one for each side of the pool) who follow the play underwater, and one deck referee who oversees the game from the surface, managing the clock, substitutions, and penalties.

Basic Rules

• Puck Play: The puck must always be played with the stick. Players cannot touch the puck with their hands, body, or any other equipment.
• Underwater Play: All puck play must occur underwater. Raising the puck out of the water, even accidentally, results in a foul.
• No Contact: Deliberate physical contact with an opponent or their equipment (other than the stick on the puck) is prohibited.
• Obstruction: Players cannot intentionally obstruct an opponent who is not in possession of the puck.
• Playing from Above: A player cannot play the puck from above another player who is directly below them and in possession of the puck. This is often referred to as "verticality."
• Substitutions: Players can substitute freely from a designated area, but only when their teammate has fully exited the water.

Scoring System

A goal is scored when the entire puck is propelled into the opponent's goal trough. The in-water referees signal a goal by raising an arm and pointing to the goal, which is then confirmed by the deck referee. After a goal, play restarts from the center of the pool, similar to the start of a half.

Fouls and Penalties

Fouls are called for rule infringements, ranging from minor infractions to more serious offenses.

• Minor Fouls: Result in a free puck awarded to the non-offending team at the location of the foul. Examples include playing the puck out of the water or minor obstruction.
• Major Fouls: Lead to a player being sent to the "sin bin" (penalty box) for a specified period, typically two minutes, leaving their team short-handed. Examples include dangerous play, intentional contact, or repeated minor fouls.
• Penalty Shot: In rare cases, a penalty shot may be awarded if a clear scoring opportunity is illegally prevented.
• Exclusion: For severe or repeated offenses, a player can be excluded from the remainder of the game.

The deck referee manages the penalty clock and ensures fair play from the surface, while the in-water referees are crucial for observing the often subtle interactions beneath the surface.

Underwater Hockey requires specialized equipment designed for both performance and safety in the aquatic environment. The playing area is a standard swimming pool, adapted with specific markings and goals.

Primary Equipment

• Mask: A diving mask allows players to see clearly underwater.
• Snorkel: Used for breathing at the surface without lifting the head, allowing players to keep an eye on the play.
• Fins: Powerful swimming fins provide propulsion and maneuverability underwater.
• Stick: A short, curved stick, typically made of wood or plastic, used to push the puck. Sticks are usually around 20-30 cm long and designed to be easily gripped and maneuvered with one hand.
• Puck: A lead-weighted puck, approximately 12-15 cm in diameter and 3 cm thick, weighing around 1.2-1.5 kg. Its weight ensures it stays on the pool bottom.
• Protective Glove: Worn on the playing hand to protect against abrasion from the pool bottom and accidental contact with the puck or other sticks.
• Swim Cap: Often worn for team identification and to keep hair out of the mask.
• Mouthguard: Recommended for player safety, though not always mandatory.

Playing Area

Underwater Hockey is played in a swimming pool with specific dimensions and features:

• Dimensions: The ideal playing area is typically 25 meters long, 12-15 meters wide, and 2-4 meters deep. Shallower pools (minimum 1.8m) can be used for training or recreational play, but deeper pools are preferred for competitive matches as they allow for more dynamic three-dimensional play.
• Goals: Two goals are placed at opposite ends of the pool. These are heavy, V-shaped troughs made of stainless steel or similar material, resting on the pool bottom. They are typically 3 meters long and designed to allow the puck to be pushed into them from either side.
• Markings: Lines on the pool bottom indicate the center line, 3-meter lines (for free pucks), and 6-meter lines (for penalty shots).

Equipment and Playing Area Summary

Aspect	Description
Pool Length	25 meters
Pool Width	12-15 meters
Pool Depth	2-4 meters (minimum 1.8m)
Puck Weight	1.2-1.5 kg (lead-weighted)
Stick Length	20-30 cm
Goals	3-meter long V-shaped troughs at pool bottom

While the core rules and gameplay of Underwater Hockey are largely standardized by CMAS for international competition, some minor variations exist, primarily in recreational play or local leagues. These adaptations often aim to make the sport more accessible or to suit available pool facilities.

• Recreational vs. Competitive Play: In casual settings, rules might be relaxed regarding substitutions, minor fouls, or pool dimensions to encourage participation. Competitive play strictly adheres to CMAS international rules.
• Pool Depth Variations: While 2-4 meters is ideal, some recreational games are played in shallower pools (e.g., 1.8-2 meters). This changes the dynamic of the game, reducing the vertical play aspect and emphasizing horizontal movement.
• Number of Players: Historically, the game was called "Octopush" due to eight players per side. While the international standard is six players in the water, some local clubs might play with more or fewer players depending on turnout or pool size.
• "Short Stick" vs. "Long Stick" (Historical): Early iterations of the sport sometimes experimented with longer sticks, but the short, curved stick became the standard due to its maneuverability and safety benefits underwater. Modern play exclusively uses the short stick.

These variations are generally minor and do not constitute distinct disciplines in the way that, for example, Test Cricket differs from Twenty20. The fundamental objective and mechanics of Underwater Hockey remain consistent across all forms of play.

Underwater Hockey boasts a robust international competition calendar, culminating in world championships that showcase the sport's elite talent. These events are crucial for the sport's development and global profile.

• CMAS Underwater Hockey World Championship: This is the pinnacle event for the sport, held every two years. It features national teams competing across various age categories (Elite, Masters, Under 24, Under 19) for both men and women. The first World Championship was held in 1980.
• CMAS Age Group World Championships: Dedicated championships for junior (U19) and youth (U24) categories are also held, often in alternating years to the Elite/Masters championships, fostering the development of young talent.
• Continental Championships: Regional competitions such as the EuroCup (Europe), Pan American Championships (Americas), and Asia-Pacific Championships serve as important stepping stones and regional showcases for national teams.
• National Championships and Leagues: Many countries with active Underwater Hockey communities host their own national championships and league structures. Prominent examples include the British Octopush Association National Championships, the Canadian National Championships, and the Australian National Championships. These domestic competitions form the foundation of the sport's competitive hierarchy.

While Underwater Hockey is not currently an Olympic sport, its inclusion in multi-sport events like the World Games (organized by the International World Games Association, under the patronage of the IOC) provides a significant platform for exposure and recognition.

The global administration and development of Underwater Hockey are overseen by a hierarchical structure of governing bodies, ensuring standardized rules, fair competition, and the sport's growth.

• Confédération Mondiale des Activités Subaquatiques (CMAS): As the world governing body for underwater sports, CMAS is responsible for Underwater Hockey. It sets the international rules, sanctions world championships, and promotes the sport globally. CMAS is recognized by the International Olympic Committee (IOC) and is a member of the Global Association of International Sports Federations (GAISF).
• National Governing Bodies: Within individual countries, national federations or associations are responsible for organizing and promoting Underwater Hockey. These bodies manage national leagues and championships, select national teams, train referees, and ensure adherence to CMAS rules. Examples include the British Octopush Association (BOA), Underwater Hockey Canada, and Australian Underwater Hockey.
• Continental Federations: Regional bodies, such as the European Underwater Federation (EUF) or the Pan American Underwater Federation (CMAS America), coordinate activities and championships at a continental level, working in conjunction with CMAS and national bodies.

These organizations collectively work to maintain the integrity of the sport, develop talent, and expand its reach, from grassroots participation to elite international competition.

Understanding the specific terminology used in Underwater Hockey can greatly enhance appreciation for the game. Here are some common terms:

• Puck: The lead-weighted disc that players maneuver across the pool bottom.
• Stick: The short, curved implement used to push and control the puck.
• Fins: The flippers worn on the feet for propulsion.
• Mask: The goggle-like equipment worn over the eyes and nose for underwater vision.
• Snorkel: The tube used for breathing at the surface while keeping the face in the water.
• Goal Trough: The V-shaped goal structure resting on the pool bottom.
• Verticality: A foul where a player attempts to play the puck from directly above an opponent who is in possession of the puck.
• Free Puck: A restart awarded to the non-offending team after a minor foul, taken from the location of the infringement.
• Sin Bin: The penalty box area where a player serves a temporary suspension for a major foul, leaving their team short-handed.
• Deck Referee: The official who supervises the game from the pool deck, managing the clock, substitutions, and overall flow.
• In-Water Referee: The officials who are in the water, often diving to the bottom, to closely monitor play and call fouls.
• Breakaway: When a player gets clear of defenders and has a direct path to the opponent's goal.
• Power Play: The advantage gained by a team when an opponent is in the sin bin, resulting in a numerical superiority in the water.

While not a mainstream spectator sport, Underwater Hockey holds significant cultural importance within the global sub-aqua and aquatic sports communities. Its unique demands foster a strong sense of camaraderie and a distinct subculture among its participants.

The sport's popularity is strongest in countries with a history of diving and aquatic activities, particularly in the UK, Canada, Australia, New Zealand, South Africa, France, and Colombia. In these regions, clubs often form tight-knit communities, with players developing deep bonds through shared training, travel to competitions, and the unique challenges of the underwater environment.

Underwater Hockey promotes exceptional physical fitness, including cardiovascular endurance, lung capacity, and muscular strength, making it a valuable cross-training activity for other aquatic sports. It also emphasizes teamwork and non-verbal communication, as players must anticipate each other's movements without speaking underwater.

Despite its niche status, the sport has a growing media presence through online streaming of major championships and dedicated social media channels. This helps to raise its profile and attract new participants, particularly among those seeking an unconventional and physically demanding team sport. Its inclusive nature, welcoming players of various ages and skill levels, further contributes to its enduring appeal and cultural relevance within its dedicated community.