A "sea" is often defined as a large body of saltwater, either forming part of the Earth's vast oceans or being partially enclosed by land. Examples include the Mediterranean Sea and the Black Sea.

The sea is the salty water that covers about three-quarters of the Earth's surface. Most of the kids have never seen the sea. You use seas when you are describing the sea at a particular time or in a particular area. He drowned after 30 minutes in the rough seas.

Sea definition: The continuous body of salt water covering most of the earth's surface, especially this body regarded as a geophysical entity distinct from earth and sky.

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The sea is the interconnected system of all the Earth's oceanic waters, including the Atlantic, Pacific, Indian, Southern and Arctic Oceans. [1] However, the word "sea" can also be used for many specific, much smaller bodies of seawater, such as the North Sea or the Red Sea.

Other articles where sea is discussed: Ocean vs. Sea: What’s the Difference?: In contrast, seas are smaller and shallower, often partially enclosed by land. For instance, the Atlantic Ocean covers approximately one-fifth of Earth’s surface, while the Mediterranean Sea, a well-known sea, is significantly smaller.