Underwater

The Underwater environment refers to the region below the surface of water in a natural or artificial feature (called a body of water) such as an ocean, sea, lake, pond, reservoir, river, or aquifer. Some characteristics of the underwater environment are universal, but many depend on the local situation. The Underwater environment refers to the region below the surface of water in a natural or artificial feature (called a body of water) such as an ocean, sea, lake, pond, reservoir, river, or aquifer. Some characteristics of the underwater environment are universal, but many depend on the local situation. Liquid water has been present on Earth for most of the history of the planet. The underwater environment is thought to be the place of the origin of life on Earth, and it remains the ecological region most critical to the support of life and the natural habitat of the majority of living species. Several branches of science are dedicated to the study of this environment or specific parts or aspects of it.