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List Of Seas On Earth

This is a list of seas of the World Ocean, including marginal seas, areas of water, various gulfs, bights, bays, and straits.

In many cases it is a matter of tradition for a body of water to be named a sea or a bay, etc., therefore all these types are listed here.

List Of Seas On Earth
Marginal seas as defined by the International Hydrographic Organization

Terminology

  • Ocean – the four to seven largest named bodies of water in the World Ocean, all of which have "Ocean" in the name. See Borders of the oceans for details.
  • Sea has several definitions:
    • A division of an ocean, delineated by landforms, currents (e.g., Sargasso Sea), or specific latitude or longitude boundaries. This includes but is not limited to marginal seas, and this is the definition used for inclusion in this list.
    • A marginal sea is a division of an ocean, partially enclosed by islands, archipelagos, or peninsulas, adjacent to or widely open to the open ocean at the surface, and/or bounded by submarine ridges on the sea floor.
    • The World Ocean. For example, the Law of the Sea states that all of the World Ocean is "sea", and this is also common usage for "the sea".
    • Any large body of water with "Sea" in the name, including lakes.
  • River – a narrow strip of water that flows over land from a higher elevation to a lower one
  • Tributary – a small river that flows into a larger one
  • Estuary – the piece of a river that flows into the sea or ocean
  • Strait – a narrow area of water connecting two wider areas of water, also sometimes known as a passage
  • Channel – usually wider than a strait
  • Passage – connects waters between islands, also sometimes known as a strait
  • Canal – a human-made channel
  • Fjard – a large open water between groups of islands

There are several terms used for bulges of ocean that result from indentations of land, which overlap in definition, and which are not consistently differentiated:

  • Bay – generic term; though most features with "Bay" in the name are small, some are very large
  • Gulf – a very large bay, often a top-level division of an ocean or sea
  • Fjord – a long bay with steep sides, typically formed by a glacier
  • Bight – a bay that is typically shallower than a sound
  • Sound – a large, wide bay which is typically deeper than a bight, or a strait
  • Cove – a small, typically sheltered bay with a relatively narrow entrance
  • Inlet – a narrow and long bay similar to a land peninsula, but adjoining the sea
  • Polynya – least used of these terms, a patch of water surrounded by ice

Many features could be considered to be more than one of these, and all of these terms are used in place names inconsistently; especially bays, gulfs, and bights, which can be very large or very small. This list includes large areas of water no matter the term used in the name.

Largest seas by area

The largest terrestrial seas are:

  1. Philippine Sea – 5.695 million km2
  2. Coral Sea – 4.791 million km2
  3. American Mediterranean Sea – 4.200 million km2
  4. Arabian Sea – 3.862 million km2
  5. Sargasso Sea – 3.5 million km2
  6. South China Sea – 3.5 million km2
  7. Weddell Sea – 2.8 million km2
  8. Caribbean Sea – 2.754 million km2
  9. Mediterranean Sea – 2.510 million km2
  10. Gulf of Guinea – 2.35 million km2
  11. Tasman Sea – 2.3 million km2
  12. Bay of Bengal – 2.172 million km2
  13. Bering Sea – 2 million km2
  14. Sea of Okhotsk – 1.583 million km2
  15. Gulf of Mexico – 1.550 million km2
  16. Gulf of Alaska – 1.533 million km2
  17. Barents Sea – 1.4 million km2
  18. Norwegian Sea – 1.383 million km2
  19. East China Sea – 1.249 million km2
  20. Hudson Bay – 1.23 million km2
  21. Greenland Sea – 1.205 million km2
  22. Somov Sea – 1.15 million km2
  23. Mar de Grau – 1.14 million km2
  24. Riiser-Larsen Sea – 1.138 million km2
  25. Sea of Japan – 1.05 million km2
  26. Argentine Sea – 1 million km2
  27. East Siberian Sea – 987,000 km2
  28. Lazarev Sea – 929,000 km2
  29. Kara Sea – 926,000 km2
  30. Scotia Sea – 900,000 km2
  31. Labrador Sea – 841,000 km2
  32. Andaman Sea – 797,700 km2
  33. Laccadive Sea – 786,000 km2
  34. Irminger Sea – 780,000 km2
  35. Solomon Sea – 720,000 km2
  36. Mozambique Channel – 700,000 km2
  37. Cosmonauts Sea – 699,000 km2
  38. Banda Sea – 695,000 km2
  39. Baffin Bay – 689,000 km2
  40. Laptev Sea – 662,000 km2
  41. Arafura Sea – 650,000 km2
  42. Ross Sea – 637,000 km2
  43. Chukchi Sea – 620,000 km2
  44. Timor Sea – 610,000 km2
  45. North Sea – 575,000 km2
  46. Bellingshausen Sea – 487,000 km2
  47. Beaufort Sea – 476,000 km2
  48. Red Sea – 438,000 km2
  49. Black Sea – 436,000 km2
  50. Gulf of Aden – 410,000 km2
  51. Yellow Sea – 380,000 km2
  52. Baltic Sea – 377,000 km2
  53. Caspian Sea – 371,000 km2
  54. Libyan Sea – 350,000 km2
  55. Mawson Sea – 333,000 km2
  56. Levantine Sea – 320,000 km2
  57. Java Sea – 320,000 km2
  58. Gulf of Thailand – 320,000 km2
  59. Celtic Sea – 300,000 km2
  60. Gulf of Carpentaria – 300,000 km2
  61. Celebes Sea – 280,000 km2
  62. Tyrrhenian Sea – 275,000 km2
  63. Sulu Sea – 260,000 km2
  64. Cooperation Sea – 258,000 km2
  65. Persian Gulf – 251,000 km2
  66. Flores Sea – 240,000 km2
  67. Gulf of St. Lawrence – 226,000 km2
  68. Bay of Biscay – 223,000 km2
  69. Aegean Sea – 214,000 km2
  70. Gulf of Anadyr – 200,000 km2
  71. Molucca Sea – 200,000 km2
  72. Oman Sea – 181,000 km2
  73. Ionian Sea – 169,000 km2
  74. Gulf of California – 160,000 km2
  75. Balearic Sea – 150,000 km2
  76. Adriatic Sea – 138,000 km2

Marginal seas by ocean

Seas may be considered marginal between ocean and land, or between oceans in which case they may be treated as marginal parts of either. There is no single ultimate authority on the matter.

Arctic Ocean

(clockwise from 180°)

Atlantic Ocean

In addition to the marginal seas listed in the three subsections below, the Arctic Ocean itself is sometimes also considered a marginal sea of the Atlantic.

Africa and Eurasia

List Of Seas On Earth 
The Norwegian Sea
List Of Seas On Earth 
The Aegean, Adriatic, Ionian, and Tyrrhenian are all marginal seas within the Mediterranean Sea.

Americas

(coast-wise from north to south)

Northern islands

List Of Seas On Earth 
The Irish Sea

(from east to west)

Indian Ocean

List Of Seas On Earth 
The Arabian Sea as a marginal sea of the Indian Ocean.

Pacific Ocean

List Of Seas On Earth 
Coral Sea

Americas

Australia and Eurasia

Southern Ocean

Defined by ocean currents

While all other seas in the world are defined at least in part by land boundaries, there is only one sea which is defined only by ocean currents:

Not included

Entities called "seas" which are not divisions of the World Ocean are not included in this list. Excluded are:

See also

Notes

References

This article uses material from the Wikipedia English article List of seas on Earth, which is released under the Creative Commons Attribution-ShareAlike 3.0 license ("CC BY-SA 3.0"); additional terms may apply (view authors). Content is available under CC BY-SA 4.0 unless otherwise noted. Images, videos and audio are available under their respective licenses.
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