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Seas and bays

Seas and bays

This animation demonstrates the most important seas and bays.

Geography

Keywords

sea, bay, World Ocean, ocean, mediterranean sea, marginal sea, map, map knowledge, geography

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Scenes

Oceans

  • Atlantic Ocean - With a total area of about 85 million km², it is the second largest ocean in the world. It has an elongated, S-shaped basin that extends vertically. Its average depth, about 3,300 m, is smaller compared to the other oceans. It is considered a young ocean that is still expanding. On average, it widens 3 cm per year from east to west. The largest rivers by discharge of water (e.g. the Amazon River, the Niger River, the Congo River) drain into it.
  • Pacific Ocean - With a total area of about 169 million km², it is the largest ocean in the world. Its widest part is almost 18,000 km wide. Its average depth is about 4,200 m, the deepest part being the Mariana Trench (about 11,034 m). Its basin covers almost 50% of the Earth’s water surface. It is an aging ocean, meaning that it does not widen any further.
  • Indian Ocean - A smaller ocean with a total area of about 70 million km². Most of its territory is situated in the Southern Hemisphere. Its average depth is about 3,900 m. It is considered a young ocean that is still expanding. It is the warmest ocean in the world because its northern border is located in the tropics and is in no connection with the Arctic waters.
  • Arctic Ocean - With a total area of about 15 million km², it is the smallest, as well as the youngest ocean on Earth. It is surrounded by continents and is only connected to the Pacific Ocean by the Bering Strait and to the Atlantic Ocean through the Greenland Sea.
  • Southern Ocean - The southernmost part of the World Ocean, bordered to the north by the 60° South latitude. It surrounds the Antarctica; its area is 22 million km².
  • Arctic Circle
  • Tropic of Cancer
  • Equator
  • Tropic of Capricorn
  • Antarctic Circle
  • South Pole
  • North Pole

Definitions of terms:

World Ocean: A body of saltwater encompassing continents; the bulk of all the oceans and seas, the contiguous hydrosphere of the Earth. It covers 71% (about 361 million km²) of the Earth’s surface.

Ocean: Part of the World Ocean, a vast, deep body of saltwater in its own basin and system of currents (Atlantic Ocean, Pacific Ocean, Indian Ocean, Arctic Ocean, Southern Ocean).

Sea: Part of the World Ocean close to the continents; a body of water filling a depression of the Earth’s surface. It is separated from the ocean by islands, peninsulas and straits. It does not have its own system of currents and its salt content is varying (1-41‰).

Bay: A body of water connected to a lake, sea or ocean, extending more or less into the landmass, and enclosed by land from three directions.

Mediterranean sea: A body of water partly (e.g. Baltic Sea) or completely (e.g. Black Sea) surrounded by land, having its own basin and water balance, connected to the ocean only by a narrow strait.

Marginal sea: A belt of coastal waters, not having its own basin, separated from the ocean by an island, an archipelago or a peninsula (e.g. Sea of Japan).

Seas

  • Adriatic Sea
  • Andaman Sea
  • Arabian Sea
  • Arafura Sea
  • Sea of Azov
  • Baltic Sea
  • Barents Sea
  • Beaufort Sea
  • Bellingshausen Sea
  • Bering Sea
  • Celebes Sea
  • Chukchi Sea
  • South China Sea
  • Aegean Sea
  • North Sea
  • White Sea
  • Black Sea
  • Philippine Sea
  • Flores Sea
  • Mediterranean Sea
  • Greenland Sea
  • Irminger Sea
  • Irish Sea
  • Sea of Japan
  • Java Sea
  • Ionian Sea
  • Kara Sea
  • Caribbean Sea
  • Caspian Sea
  • East China Sea
  • East Siberian Sea
  • Celtic Sea
  • Coral Sea
  • Sea of Crete
  • Labrador Sea
  • Laptev Sea
  • Ligurian Sea
  • Molucca Sea
  • Sea of Marmara
  • Norwegian sea
  • Okhotsk Sea
  • Ross Sea
  • Yellow Sea
  • Sawu Sea
  • Ceram Sea
  • Timor Sea
  • Tyrrhenian Sea
  • Red Sea
  • Weddell Sea
  • Arctic Circle
  • Tropic of Cancer
  • Equator
  • Tropic of Capricorn
  • Antarctic Circle
  • South Pole
  • North Pole

Bays

  • Gulf of Aden
  • Gulf of Alaska
  • Gulf of Antalya
  • Gulf of Arica
  • Baffin Bay
  • Whale Bay
  • Bay of Bengal
  • Benguela Bay
  • Gulf of Bothnia
  • Bristol Bay
  • Gulf of Cádiz
  • Bay of Campeche
  • Gulf of Carpentaria
  • Cheskaya Bay
  • Gulf of Darién
  • Gulf of Finland
  • Hudson Bay
  • Gulf of California
  • Garabogazköl
  • Gulf of Khambhat
  • Gulf of Kiel
  • Gulf of Corinth
  • English Channel
  • Gulf of Mannar
  • Gulf of Mexico
  • Great Australian Bay
  • Gulf of Ob
  • Gulf of Okhotsk
  • Gulf of Oman
  • Lions Bay
  • Panama Bay
  • Persian Gulf
  • Gulf of Riga
  • St Lawrence Bay
  • Gulf of Venezuela
  • Arctic Circle
  • Tropic of Cancer
  • Equator
  • Tropic of Capricorn
  • Antarctic Circle
  • South Pole
  • North Pole

Data

  • Adriatic Sea
  • Andaman Sea
  • Arabian Sea
  • Arafura Sea
  • Atlantic Ocean - With a total area of about 85 million km², it is the second largest ocean in the world. It has an elongated, S-shaped basin that extends vertically. Its average depth, about 3,300 m, is smaller compared to the other oceans. It is considered a young ocean that is still expanding. On average, it widens 3 cm per year from east to west. The largest rivers by discharge of water (e.g. the Amazon River, the Niger River, the Congo River) drain into it.
  • Sea of Azov
  • Baltic Sea
  • Barents Sea
  • Beaufort Sea
  • Bellingshausen Sea
  • Bering Sea
  • Celebes Sea
  • Pacific Ocean - With a total area of about 169 million km², it is the largest ocean in the world. Its widest part is almost 18,000 km wide. Its average depth is about 4,200 m, the deepest part being the Mariana Trench (about 11,034 m). Its basin covers almost 50% of the Earth’s water surface. It is an aging ocean, meaning that it does not widen any further.
  • Chukchi Sea
  • South China Sea
  • Aegean Sea
  • North Sea
  • White Sea
  • Black Sea
  • Philippine Sea
  • Flores Sea
  • Mediterranean Sea
  • Greenland Sea
  • Indian Ocean - A smaller ocean with a total area of about 70 million km². Most of its territory is situated in the Southern Hemisphere. Its average depth is about 3,900 m. It is considered a young ocean that is still expanding. It is the warmest ocean in the world because its northern border is located in the tropics and is in no connection with the Arctic waters.
  • Irminger Sea
  • Irish Sea
  • Sea of Japan
  • Java Sea
  • Arctic Ocean - With a total area of about 15 million km², it is the smallest, as well as the youngest ocean on Earth. It is surrounded by continents and is only connected to the Pacific Ocean by the Bering Strait and to the Atlantic Ocean through the Greenland Sea.
  • Ionian Sea
  • Kara Sea
  • Caribbean Sea
  • Caspian Sea
  • East China Sea
  • East Siberian Sea
  • Celtic Sea
  • Coral Sea
  • Sea of Crete
  • Labrador Sea
  • Laptev Sea
  • Ligurian Sea
  • Molucca Sea
  • Sea of Marmara
  • Norwegian sea
  • Okhotsk Sea
  • Ross Sea
  • Yellow Sea
  • Sawu Sea
  • Ceram Sea
  • Timor Sea
  • Tyrrhenian Sea
  • Red Sea
  • Weddell Sea
  • Southern Ocean - The southernmost part of the World Ocean, bordered to the north by the 60° South latitude. It surrounds the Antarctica; its area is 22 million km².
  • Arctic Circle
  • Tropic of Cancer
  • Equator
  • Tropic of Capricorn
  • Antarctic Circle
  • South Pole
  • North Pole

Animation

  • Adriatic Sea
  • Andaman Sea
  • Arabian Sea
  • Arafura Sea
  • Atlantic Ocean - With a total area of about 85 million km², it is the second largest ocean in the world. It has an elongated, S-shaped basin that extends vertically. Its average depth, about 3,300 m, is smaller compared to the other oceans. It is considered a young ocean that is still expanding. On average, it widens 3 cm per year from east to west. The largest rivers by discharge of water (e.g. the Amazon River, the Niger River, the Congo River) drain into it.
  • Sea of Azov
  • Baltic Sea
  • Barents Sea
  • Beaufort Sea
  • Bellingshausen Sea
  • Bering Sea
  • Celebes Sea
  • Pacific Ocean - With a total area of about 169 million km², it is the largest ocean in the world. Its widest part is almost 18,000 km wide. Its average depth is about 4,200 m, the deepest part being the Mariana Trench (about 11,034 m). Its basin covers almost 50% of the Earth’s water surface. It is an aging ocean, meaning that it does not widen any further.
  • Chukchi Sea
  • South China Sea
  • Aegean Sea
  • North Sea
  • White Sea
  • Black Sea
  • Philippine Sea
  • Flores Sea
  • Mediterranean Sea
  • Greenland Sea
  • Indian Ocean - A smaller ocean with a total area of about 70 million km². Most of its territory is situated in the Southern Hemisphere. Its average depth is about 3,900 m. It is considered a young ocean that is still expanding. It is the warmest ocean in the world because its northern border is located in the tropics and is in no connection with the Arctic waters.
  • Irminger Sea
  • Irish Sea
  • Sea of Japan
  • Java Sea
  • Ionian Sea
  • Kara Sea
  • Caribbean Sea
  • Caspian Sea
  • East China Sea
  • East Siberian Sea
  • Celtic Sea
  • Coral Sea
  • Sea of Crete
  • Labrador Sea
  • Laptev Sea
  • Ligurian Sea
  • Molucca Sea
  • Sea of Marmara
  • Norwegian sea
  • Okhotsk Sea
  • Ross Sea
  • Yellow Sea
  • Sawu Sea
  • Ceram Sea
  • Timor Sea
  • Tyrrhenian Sea
  • Red Sea
  • Weddell Sea
  • Southern Ocean - The southernmost part of the World Ocean, bordered to the north by the 60° South latitude. It surrounds the Antarctica; its area is 22 million km².
  • Gulf of Aden
  • Gulf of Alaska
  • Gulf of Antalya
  • Gulf of Arica
  • Baffin Bay
  • Whale Bay
  • Bay of Bengal
  • Benguela Bay
  • Gulf of Bothnia
  • Bristol Bay
  • Gulf of Cádiz
  • Bay of Campeche
  • Gulf of Carpentaria
  • Cheskaya Bay
  • Gulf of Darién
  • Gulf of Finland
  • Hudson Bay
  • Gulf of California
  • Garabogazköl
  • Gulf of Khambhat
  • Gulf of Kiel
  • Gulf of Corinth
  • English Channel
  • Gulf of Mannar
  • Gulf of Mexico
  • Great Australian Bay
  • Gulf of Ob
  • Gulf of Okhotsk
  • Gulf of Oman
  • Lions Bay
  • Panama Bay
  • Persian Gulf
  • Gulf of Riga
  • St Lawrence Bay
  • Gulf of Venezuela
  • Arctic Circle
  • Tropic of Cancer
  • Equator
  • Tropic of Capricorn
  • Antarctic Circle
  • South Pole
  • North Pole

Narration

The World Ocean is a body of saltwater that surrounds the continents, and essentially it is the totality of all the oceans and seas. It covers 71% (about 361 million km²) of the Earth’s surface. Oceans are vast, deep bodies of saltwater with a relatively constant salt content and with their own basins and systems of currents. The Pacific, Atlantic and Indian Oceans are all regarded as oceans as well as the Arctic Ocean and the Southern Ocean.

Seas are smaller bodies of saltwater close to land. They are separated from the oceans by islands, peninsulas and straits. They do not have their own system of currents and their salt content varies. Seas can be further divided into marginal seas and mediterranean seas.

A mediterranean sea is connected to the ocean basin only by a narrow strait. It has its own basin and water balance. Examples of a mediterranean sea include the namesake Mediterranean Sea and the Baltic Sea.

A marginal sea is only separated from an ocean by archipelagos. Compared to a mediterranean sea, it does not usually have its own basin or water balance and it is shallower. The Sea of Japan is an example of a marginal sea.

A bay is a body of water connected to a lake, sea or ocean, extending more or less into the landmass, and enclosed by land from three directions. Examples of a bay include the Persian Gulf and the Bay of Bengal.

The World Ocean is not evenly distributed on the Earth’s surface. 70% of the Northern Hemisphere is covered with land and only 30% is covered with ocean or sea. However, in the Southern Hemisphere it is the other way around, 70% is covered with ocean or sea and only 30% is covered with land.

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