Sony has been at the vanguard of producing water-proof phones and tablets for several years and they have several phones and devices to prove that point HERE.
Now they have taken yet another great step to prove that they are the undisputed leader in water resistant device by opening the Xperia Aquatech Store which is located about 13 feet under the sea on the Dubai coast.
Gaining access to the underwater store requires actually scuba diving with full kits to the place. The store is actually one big pocket of air under the sea and contains a wide range of waterproof Xperia phones and tablets which were placed on top of a ledge on the water.
Below are pictures courtesy of Sony Xperiablog: