Vallenis is a mix between two popular sports- tennis and volleyball. It was first played in Clearwater, Florida and has since spread all over the globe because of its ability to be played in almost any environment.
Vallenis is played with a volleyball and can be played on most any surface. The difference between volleyball and Vallenis is that the ball can bounce once on the ground before being played by the player. The playing field is also much larger and can be played of the walls in a walled arena. This allows a vastly expanded form of volleyball.
Vallenis can be played on the beach, but must be hard sand in order to acchieve appropriate bounce.