This strange variant of rugby is practiced in the pool at a depth varying between 3 and 5 meters.
The two teams, consisting of 12 players, 6 in water and 6 on the bench. They can make continuous changes giving breath to them.
The players wear fins, mask and snorkel.
The ball must not come out of the water and for this reason it is filled with a particular solution that weighs it down avoiding it can float.