The player who is chosen to go first closes his/her eyes and faces away from the water. Another player hides a small, hard to see, object on the pool bottom while the other players watch. The first player then enters the water and searches for the hidden object as the other players who are watching from the pool sides or deck yell out "HOT" or "COLD". Hot is yelled as the player is nearing the object and "COLD" is yelled out when the player moves away from the object. Each player has a turn and is timed by the other players. The one taking the least amount of time wins.