Anyone can be an underwater rugby player. Your neighbour's wife, your coworker, your classmate could be one of those crazies and you may never know. The game is a combination of two of the toughest sports, water polo and rugby, except... That it's unique as hell. No odd shaped ball, no fakie-fakie-long throw, no offside, etc. There is a lot of swimming and it's a full contact sport. And it's played breathhold and it has 3 dimensional gameplay. Like Quidditch or Blitzball, just takes a bit more conditioning than sitting on a broomstick or in front of a Playstation. It's never going to be mainstream unless someone is crazy enough to invest in a plexiglass arena. Enjoy!