Watch Sand Tigers - Sentinels of the Deep (2011) : Full Movie Online Free Dive with the endangered and fearsome Sand Tiger shark and you'll see why adventurers travel from all over the globe to swim side-by-side with these graceful and magnificent creatures. Explore the sunken wreck of the Papoose (a tanker torpedoed during WWII by a German U-boat) where divers literally get nose to nose with dozens and sometimes even hundreds of Sand Tigers.