Oceans and Seas

**Definition:** A great expanse of continuous bodies of salt water which together cover more than 70 percent of the earth's surface. Seas may be partially or entirely enclosed by land, and are smaller than the five oceans (Atlantic, Pacific, Indian, Arctic, and Antarctic).

**Tree numbers:** - G01.311.625 - G16.500.275.725.500.650 - Z01.756

**Synonyms:** - Seas and Oceans