The shallow part is 4 feet. This depth makes the flip turn easy and possible. The pool is deeper, 6 feet, than Jing's height 5 feet 9 inches. In this Worthington pool, when Jing makes turns, Jing knows that he will not hit the bottom of the pool. Therefore, he dares to make the turn.
Batman: The Animated Series. Episode: Joker's Favor. Dr. Harleen Francis Quinzel, also known as Harley Quinn, first appeared in the Batman: The Animated Series episode Jokers Favor (episode #022, original air date: September 11, 1992) where she served as a humorous female sidekick to the Joker.
Within the Industrial District of the mega-prison, Harley kidnapped a reporter who was used as a hostage to free the Joker. Batman then fought Harley Quinn's thugs before he encountered Harley, who released her remaining thugs in an attempt wear Batman down before she attempted to kill the reporter herself. Harley was then knocked down by a Batarang before Batman also defeated Mr. Hammer, captured her, and rescued the hostage.