Underwater Hockey (UWH), is a globally played limited-contact sport in which two teams compete to manoeuvre a puck across the bottom of a swimming pool into the opposing team’s goal by propelling it with a hockey stick (bat).
Underwater hockey is played in a 25m x 15m pool that is between 2 – 4 m deep. The game consists of 15 minutes halves and a three minutes half time. Each team is allowed one 60 seconds time out per half. The game clock stops for any infringements in the lasr 2 minutes of the game.

Each side has 12 players, 10 of who can play in any one game. During the game 6 players are in the pool with 4 interchange players on the side who can sub at any time. The players wear large fins, a diving mask and snorkel and a thick glove made from latex to protect the hand from the pool bottom and the puck. The top players can flick the puck well over 3m and it comes off the bottom enough to go over another player.

If you want to play this sport, the place you should go to is the Stirling Underwater Hockey Club (SUHC) in Singapore. Founded in 2004 to introduce and promote this exciting game in Singapore, SUHC has now become one of the world’s most international underwater hockey clubs with active members from several countries: Singapore, the Philippines, Indonesia, Malaysia, Belgium, South Africa, Portugal, Netherlands, Australia, Germany and the UK. They are also the organizer of the first Asian Underwater Hockey Championships (AUHC) in 2007 in Singapore.
According to suhc.org