About 1,460 teratonnes (Tt) of water cover 71% of Earth\\\'s surface, mostly in oceans and other large water bodies.A significant fraction of the human body is water. This body water is distributed in different compartments in the body. Lean muscle tissue contains about 75% water. Blood contains 83% water, body fat contains 25% water and bone has 22% water.In men about 55% of the body mass is water.