The Oceanic glass container contains all water ever and is made up of water bottles. In this area is located several Omega Fish, Omega Sharks, and the strongest/biggest creature known here, the Omega Whale. It has a massive tear in it called The Tear in Reality.
Any liquid outside of this container is NOT water and is some other type of substance completely. Now you may be asking how it doesn't have water in it if it's a liquid, but that will be answered once we get there.
Pictures of entities