Beach volleyball is a popular sport that is played on a SAND surface. The surface for beach volleyball is made up of SAND, which is a four-letter word. SAND is the ideal material for beach volleyball because it provides a soft and even playing surface. It also helps to absorb shock and reduce the risk of injury. Beach volleyball is a fast-paced game that requires quick reflexes and agility, so the SAND surface helps to provide the necessary traction for players to move quickly.