Saltwater bodies are large bodies of water that contain salt, such as seas, oceans, and gulfs. The term 'saltwater bodies' can refer to any of these bodies of water, which are all connected and part of the same global ocean. The most common saltwater body is the sea, which is a large body of saline water that is partially enclosed by land. Oceans are the largest saltwater bodies, covering almost three-quarters of the Earth's surface. Gulfs are smaller bodies of water that are partially enclosed by land, and are usually connected to an ocean or sea.