Sea and ocean

Differences between Seas and Oceans
Differences between Seas and Oceans

The Differences between Seas and Oceans is given here. When expressing ourselves in our day-to-day life, it is common for us to use the sea and ocean as synonyms. There are, however, specific differences between both terms that you must know to use both words correctly.

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Seas are masses of saltwater much smaller than an ocean. The term sea is used to also designate extensions of brackish lakes such as the Caspian Sea or the Dead Sea.

Defining the sea as an extension of salty water smaller than an ocean is not complete, the seas are in contact with the ocean and can be open or closed, if a sea is almost totally in contact with the land it is known as sea continental, while if it is totally open to the ocean it is called the littoral sea.

The seas are distinguished from the oceans either because they are separated from them by a geographical situation (located between two landmasses or according to their position with respect to the continent) they have other very different conditions such as salinity, flora, and fauna or it is distinguished from arbitrary shape.

There are three categories of seas:

Littoral seas

  • Beaufort Sea in the Arctic Ocean
  • Norwegian Sea in the Atlantic
  • Sea of ​​Oman in the Indian Ocean

Continental seas

  • Mediterranean Sea.
  • Baltic Sea.
  • Black Sea.
  • Sea of ​​Japan.

Closed seas or endorheic lake

  • Dead Sea.
  • Caspian Sea.
  • Aral Sea.


Oceans are large bodies of water that separate two or more continents and that make up most of the earth’s surface.

The oceans are classified into:

Big oceans

  • Atlantic.
  • Indian.
  • Peaceful.

Minor oceans

  • Arctic
  • Antarctic

The oceans cover 71% 2 of the Earth’s surface, the largest ocean being the Pacific. The depth of these bodies of water will depend on the oceanic relief, the average depth is 3900 meters, the deepest area is in the Mariana Trench with 11 034 m depth.

suggested video: Seas vs Oceans 

Differences between Seas and Oceans

  • The seas are small bodies of saltwater that are part of the oceans.
  • Oceans are large bodies of water that cover much of the earth’s surface.
  • The seas can be closed while the oceans delimit two or even three continents.
  • Seas differ from oceans arbitrarily, by their conditions or by geographic location.

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