#3 - Underwater Hockey
After Field Hockey and Ice Hockey, Underwater Hockey has existed since the early 1950's. It is also called Octopush. In this game, players have to push a puck using a stick on the floor of a swimming pool into opponent's goal post. The game has it's own World Championship.
Underwater Hockey is a globally played sports which ensure limited contact founded in the each team's bid to push the puck to the opponent's goal. The sport has its federation which governs the rules and guidelines of the game. It is not a spectator friendly game since not many pools have underwater viewing experience.
Edited by Jay M