Water polo is a competitive team water sport played in a pool with goals positioned at both ends.  A Water Polo game is played by two opposing teams and while a team roster may include 15 or more players, only 7 players (6 field players and a goal keeper) are in the pool during game play.  A game consists of 4 quarters (similar to American Football) during which each team tries to score the most goals by throwing the ball into the opposing teams goal (similar to soccer).  The team with the most goals at the end of a match wins.  Water Polo games are typically played in deep water (usually 6ft deep or more).  Players are not allowed to touch the bottom or sides of the pool during game play.  Players must swim with & without the ball, egg beater (a special style of treading water), throw, catch and shoot the ball.  The field players may only use one hand, but the goalkeeper may use two hands.  Field players are expected to be able to play both offense and defense (similar to basketball).