Beach volleyball started as an alternative training for indoor volleyball. It was invented by the Outrigger Canoe Club in Oahu, Hawaii. Duke Kahanamoku, athletic director and lifeguard at The Beach Club in the mid-1920s, introduced members to surfing and beach volleyball. He is credited with evolving the sport from a leisure activity to an athletic endeavor, and became famous for his jumps and spikes. The concept of a two-person beach volleyball team was developed at Santa Monica’s Sand and Sea Club in the late 1920s, when only four people showed up at the beach to play beach volleyball, until then a four-person team sport. The first doubles tournament took place in 1930 at the beach volleyball courts immediately to the south of the Santa Monica Pier.