The underwater environment refers to the region below the surface of, and immersed in, liquid water in a natural or artificial feature called a body of water Liquid water has been present on Earth for most of the history of the planet. Deep Sea Vents, Northern Red Sea, Palau Reefs. Many of these naturally-formed displays require an aerial view to capture the vastness of each phenomenon. An ancient city, established about 1300 years ago, now lies at the 26-40 m depth underwater. Ithaa means mot