A briny body of water is a SEA, which is a large body of saline water that covers much of the Earth's surface. It is usually divided into four distinct areas: the Pacific, Atlantic, Indian, and Arctic oceans. The salinity of the SEA is determined by the amount of dissolved salts in the water, which can vary depending on the location. The briny body of water is an important source of food, minerals, and energy for many species of marine life.