The realm of water is one of the 16 realms. According to Thespia, the realm of water is completely made of water. It is ruled by a King and Queen, who have (a) daughter(s). There seems to be forms of life in the realm. Since the world is an A/U, the physics are different, allowing glass to survive under the pressure of the water. It is unknown whether there is a Food Chain in the realm, but it is possible and even likely. "It's so much like the sea, but so much different. There was water everywhere, and there were fish, too. But everything seemed to wonderful. It was like it was perfect. The physics were unique. It was like anything was possible. There were plants growing everywhere, and even clear buildings with marble and gold in them looked as if they were meant to be there." - Brynn Cole describing the Realm of Water to an anonymous.