O may have a short name but it has huge stunts. O, which is the phonetic pronunciation of “eau,” the French word for water, occurs in and over a huge 1.5 million gallon pool with synchronized swimmers, acrobats, and divers — including several former Olympic athletes. The high dive is one of the highlights of the show as a group drops 60 feet into a small body of water. The O performance is much like the water itself: expressive, smooth, surreal, and pure.