Unusual Sports - Underwater hockey
number of teams is between 60 and 80
Rules
Two teams of up to ten players compete, with six players on each
team in play at once (remaining four players are substituted into
play from a substitution area)
Before the start puck is placed in the middle of the pool,players
wait in the water, touching the wall above the goals they are
defending.
After the signal players are free to swim anywhere in the play area
and try to score by maneuvring the puck into the opponents' goal.
Players hold their breath as they dive to the bottom of the pool.
Play continues until either a goal is scored, and players return to
their wall to start a new point
two halves, ten to fifteen minutes (15 min at world championship
tournaments) , and a short half-time interval.At half time the two
teams switch ends.
Also there is penalties, that is given to the offending rules team