 VAVi serves up Indoor San Diego Volleyball Leagues at central locations in Ocean Beach Rec Center, Carmel Valley Rec, Downtown at San Diego City College and Alliant University in Miramar.Inner Tube Water Polo is a variation of the sport water polo with the important difference that players, excluding the goalkeeper, are required to float in inflatable inner tubes.VAVi’s San Diego Inner Tube Water Polo League is 7 v. 7 and played at the recently reopened WaveHouse pool 'The Plunge.'