What are the boundaries of the oceans demarcated?

I was wrong just now, but they are all divided according to natural geographical things.

1.The boundary between the Pacific and Atlantic Oceans: Drake Passage.

2.The boundary between the Pacific and Arctic Oceans: Bering Strait.

3.The boundary between the Pacific and Indian Oceans: Indonesian archipelago, Torres Strait, Bass Strait, Tasmania.

4.The boundary between the Indian and Atlantic oceans: the Suez Canal.

5.The boundary between the Atlantic and Arctic Oceans: Robertson Strait, Greenland Sea, Norwegian Sea.

Seven continents: Asia, Africa, North America, South America, Antarctica, Europe, Oceania (in order of area).

Four oceans: Pacific, Atlantic, Indian, Arctic Ocean (in order of area).

The above is the general view in the academic circles, which are all divided from a geological point of view, in fact, there is no obvious boundary between them, they are all connected.

Press land. Strait to divide.

The dividing line between the Pacific and Atlantic Oceans is at Cape Horn (the shortest distance between °W longitude and the South Shetland Islands) at the southernmost tip of South America. There are also those who draw this line on the meridian line. But to be precise, this meridian is still many nautical miles away from Cape En.

The dividing line between the Pacific Ocean and the Indian Ocean is the shortest distance from the Malay Peninsula to Sumatra, Java, Timor, and the Australian mainland to Tasmania, and its southern tip follows the meridian from the southeast corner of Tasmania to the Antarctic continent. The dividing line between the Pacific Ocean and the Arctic Ocean is most in the Bering Strait?

Place. The Atlantic Ocean is bounded by the Cape Agulhas at the southern tip of Africa along the ° longitude to the Antarctic continent.

The Atlantic Ocean is divided by the West Coast of Norway (latitude °N, Shetland Islands, Faroe Islands, Iceland, the southern tip of Greenland (the shortest distance between °N°W.

Pacific Ocean: from north to south latitude, 105 east longitude (South China Sea) to 75 west longitude (west coast of South America).

Atlantic Ocean: north to south latitude, 100 west longitude (Gulf of Mexico) to 40 east longitude (Black Sea).

Indian Ocean: 30 north latitude (Red Sea) to south latitude, 30 east longitude (Red Sea) to 135 east longitude (northwest coast of Australia).

Arctic Ocean: North latitude, all longitudes.

The world's seven major plates: Pacific plate, Eurasian plate, African plate, North American plate, Indian Ocean plate, Antarctic plate, South American plate.

1. Pacific Plate: The Pacific Plate is bounded by the Pacific Rise in the east, deep trenches in the north, west and southwest, bordered by the Aleutian Island Arc, the Japanese Island Arc, the Philippine Plate and the Indian Plate, and the Antarctic Plate in the south.

2. Eurasian Plate: It is a continental plate that includes most of Eurasia, but does not include the Indian Peninsula (Indian subcontinent) in South Asia, the Arabian Peninsula (Arabian Subcontinent) in Southwest Asia, and the area east of the Verkhnyyansk Mountains in Eastern Siberia.

3. African Plate: The western boundary of the African Plate is a discrete boundary that forms the middle and southern sections of the Mid-Atlantic Ridge, and the African Plate is connected to the North American Plate in the north and the South American Plate in the south.

The African plate is bordered by the Arabian plate to the northeast, the Indo-Australian plate to the southeast, and the Eurasian and Antarctic plates to the north and south, respectively. With the exception of the northern boundary with the Eurasian plate, the rest of the boundaries are discrete boundaries.

4. North American Plate: It is a large plate, which covers most of North America, extending eastward to the Mid-Atlantic Ridge and westward to the Chersky Mountains of Eastern Siberia. It is part of the Central American Plate, first proposed by Savile le Pichon in 1968.

Later, the American plate was subdivided into the North American plate in the north, the South American plate in the south, and some small plates around it.

5. Indian Ocean Plate: It is a secondary continental plate, which is a part of the Australian Plate of the Indian Ocean, including the northern, middle and southeastern parts of the Indian Ocean, the Indian Peninsula, the continents, islands and adjacent oceans of Oceania.

6. Antarctic plate: It is a plate that includes Antarctica and the surrounding ocean, covering an area of about 169,000,000 square kilometers. It is moving towards the Atlantic Ocean at a rate of 1 centimeter per year.

The Antarctic Plate is bordered by and is merging with the Nazca, African, South American, Scotia and Indo-Australian Plates.

7. South American plate: including South America and the western part of the South Atlantic. It is bounded to the east by the southern part of the Mid-Atlantic Ridge and the African Plate; The western boundary is the South American coastal Pacific deep ocean trench, the northern part is in contact with the Caribbean plate, and the southern part is the Antarctic plate.

The South American Plate moves westward along with the North American Plate, forming the towering Andes Mountains in the western part of South America.

The dividing line of the four oceans.

The Pacific Ocean and the Arctic Ocean stretch from Cape Dekouneov in northeastern Russia in the west, through the Great and Lesser Diomed Islands in the Bering Strait, to Cape Prince of Wales on the Seward Peninsula at the western tip of Alaska, USA. It is the narrowest point in the Bering Strait.

The Pacific Ocean and the Indian Ocean start from the north mouth of the Strait of Malacca, along the west coast of Sumatra and the south coast of Java, through the Arafura Sea and the Torus Strait, and then along the east coast of Australia and through the east longitude of 146°51' in the southeast corner of Tasmania to the Antarctic continent.

The Pacific Ocean and the Atlantic Ocean are bounded roughly by the line of 67°16'W through Cape Horn, the southern tip of South America.

The Atlantic Ocean and the Arctic Ocean stretch from the east mouth of Hudson Bay in the west, through the Davis Strait, the Danish Strait, the Iceland-Faroe Sea sill, the Wivel-Thomson Ridge, the Markle-Flagg Island in the Shetland Islands, and the line of Cape Tasted on the southwest coast of Norway.

The Atlantic Ocean and the Indian Ocean run from the 20° line of east longitude through Cape Agulhas at the southern tip of the African continent to the Antarctic continent.

1. Pacific Ocean and Arctic Ocean:

It is the narrowest part of the Bering Strait, from Cape Dekouniv in northeast Russia in the west, through the Yuanwei Da and Xiao Omid Islands in the Bering Strait, to the Prince of Wales Point in the Sue-Hidden Ander Peninsula at the western end of Alaska, USA.

2. Pacific Ocean and Indian Ocean:

From the north mouth of the Strait of Malacca, along the west coast of Sumatra and the south coast of Java, through the Arafura Sea and the Strait of Torus, and then along the east coast of Australia and through the 146th longitude of the southeast corner of Tasmania to the Antarctic continent.

3. Pacific and Atlantic:

At Drake Passage, it is roughly bounded by the 67th degree west longitude that passes through Cape Horn, the southern tip of South America.

4. Atlantic Ocean and Arctic Ocean:

It stretches from the east entrance of Hudson Bay in the west, through the Davis Strait, the Danish Strait, the Faroe Sea sill of Iceland, the Thomson Ridge of Wivel, and the island of Markelflag in the Shetland Islands, to Cape Taste on the southwest coast of Norway.

5. Atlantic Ocean and Indian Ocean:

From the 20th parallel of east longitude through Cape Agulhas at the southern tip of the African continent to Antarctica.

1. Pacific Ocean and Arctic Ocean:

It is the narrowest part of the Bering Strait, starting from Cape Dekouniv in northeast Russia in the west, passing through the Great and Small Diomed Islands in the Bering Strait, to Cape Prince Wales on the Seward Peninsula at the western tip of Alaska, USA.

2. Pacific Ocean and Indian Ocean:

It starts from the north mouth of the Strait of Malacca, along the west coast of Sumatra and the south coast of Java, through the Arafura Sea and the Strait of Torus, and then along the east coast of Australia and through the 146th longitude of the southeast corner of Tasmania to the Antarctic continent.

3. Pacific and Atlantic:

At Drake Passage, it is roughly bounded by the 67th longitude of the 67th degree west longitude that passes through Cape Horn, the southern tip of the Americas.

4. Atlantic Ocean and Arctic Ocean:

It stretches from the east mouth of Hudson Bay in the west, through the Davis Strait, the Danish Strait, the Faroese Sea Ridge in Iceland, the Markelflag Island in the Shetland Islands, and ends at Cape Taste on the southwest coast of Norway.

5. Atlantic Ocean and Indian Ocean:

From the 20th parallel east longitude of Cape Agulhas through the southern ridge of the African continent to the Antarctic continent.