Question

How are oceans divided?

Answer 1

Hint:
- An ocean (or sea) is a large body of salt water that occupies roughly 71% of the Earth's surface.
- As the primary component of Earth's hydrosphere, the ocean is essential to life, plays a role in the carbon cycle, and affects climate and weather patterns.
- The ocean is home to 230,000 recognized species, although the number of species in the ocean is likely to be much higher, probably exceeding two million, due to much of it being unexplored.

Complete answer:
The oceans' borders define the boundaries of Earth's oceanic waters. The continents, various archipelagos, and other parameters help to identify the main oceanic divisions. The Pacific Ocean, Atlantic Ocean, Indian Ocean, Southern (Antarctic) Ocean, and Arctic Ocean are the major divisions (in descending order of area). Seas, gulfs, bays, straits, and other terms are used to identify smaller parts of the oceans.

An ocean is a section of the oceanic crust that is submerged in water. The thin layer of solidified volcanic basalt that covers the Earth's mantle is known as the oceanic crust. The oceanic crust is denser than the continental crust. But it is less thick. According to this perspective, there are 3 oceans: the Caspian Sea, the World Ocean, and the Black Sea.

The collision of Cimmeria and Laurasia produced the latter two. Since tectonic plate movement has repeatedly broken the Mediterranean Sea's relation to the World Ocean via the Strait of Gibraltar, it is often regarded as a separate ocean.

The Bosphorus connects the Black Sea to the Mediterranean, but it is a natural canal carved through continental rock 7,000 years ago, rather than a piece of oceanic seafloor like the Strait of Gibraltar. Some smaller landlocked "seas," such as the Caspian Sea and various salt lakes like the Aral Sea, are not related to the World Ocean despite their names.

Note:
i) From the Southern Ocean to the Arctic Ocean, the Pacific Ocean, the biggest of the seas, stretches northward. It connects Australia and Asia, as well as the Americas.
ii) The Atlantic Ocean, the world's second largest, stretches from the Southern Ocean between the Americas to the Arctic Ocean, passing across Africa and Europe.
iii) The Indian Ocean, the world's third highest, reaches northward from the Southern Ocean to India, the Arabian Peninsula, and Southeast Asia in Asia, as well as westward from Africa to Australia.