For example, the Indian Ocean is divided in two by the country of India, forming the Arabian Sea on one side and the Bay of Bengal on the other. Greenland, northern Atlantic 2. New Guinea, southwest Pacific 3. Borneo, southwest Pacific 4. Madagascar, western Indian 5.
Salt is a mineral that is found in soil and rocks, too.
Flowing water picks up some salt and carries it to rivers. Rivers carry it to seas. The deepest place is near the Mariana Islands in the Pacific. The water is over 36,000 feet deep in the Mariana Trench. That's over 7 miles deep.