Salty water is a term used to describe water with a high concentration of salt. The most common sources of salty water are oceans, seas, and BRINE. An OCEAN is a large body of saline water that covers most of the Earth's surface. Seas are smaller bodies of salt water that are partially enclosed by land. BRINE is a highly concentrated solution of salt in water. All of these sources of salty water are essential for life on Earth.