Polo is not always played on ponies , canoe polo , cycle polo , camel polo , elephant polo , golf cart polo , Segway polo , BMX polo , yak polo and water polo also exist ; however most of these forms are not played at a professional level . Such polo variants are mostly played for recreational or touristic purposes ; they include canoe polo , cycle polo , camel polo , elephant polo , golfcart polo , Segway polo and yak polo .