The unity and continuity of the oceans of the world

 World ocean

The world ocean (English: World Ocean, global ocean) is a system of seawater on the earth that cooperates with each other. It occupies most of the water hemisphere and about 71% of the earth's surface.

Overview

The unity and continuity of the oceans of the world, which are relatively free to exchange between parts, are important and fundamental to oceanography . Unity and continuity are divided into many major oceanic areas. Oceanic areas are defined by continents and various marine features: the Atlantic Ocean, the Arctic Ocean (sometimes considered the inland sea of   the Atlantic Ocean), the Indian Ocean, the Pacific Ocean, and the Antarctic Ocean (the Antarctic Ocean). In addition (sometimes thought of as the Atlantic Ocean, the Indian Ocean, or the Southern Ocean), seawater is scattered in many small bays, inland seas, and coves.

The world ocean has existed in one or more forms in the history of the earth. The concept also goes back to classical antiquity (in the form of Oceanus). The concept of the modern World Ocean was newly created in the early 20th century by Russian oceanographer Yuly Shokalsky. Basically, it is a term used to describe a connected ocean that surrounds and covers most of the earth.

The world ocean is connected, but the world ocean can be drawn as follows, centering on the Antarctic Ocean. The Pacific Ocean, Indian Ocean, and Atlantic Ocean are coves that extend north from the Antarctic Ocean, and further north, the Atlantic Ocean leads to the Arctic Ocean. 

Its approximate shape of the world ocean is almost always treated as constant. However, this is not the case, and its shape is constantly changing due to continental drift.

About each ocean

Pacific Ocean

The Pacific Ocean is the largest ocean in the world, extending from the Antarctic Ocean in the south to the Arctic Ocean in the north, filling the gap between Australia and Asia, the Americas and Oceania. The Pacific Ocean borders the Atlantic Ocean at Cape Horn, south of South America.

Atlantic ocean

The Atlantic Ocean is the second largest ocean, extending from the Antarctic Ocean to the Arctic Ocean between South America and Africa, and between North America and Europe. The Atlantic Ocean borders the Indian Ocean at Cape Agulhas, south of Africa.

Indian Ocean

The Indian Ocean extends from the Antarctic Ocean to India to the north and from Africa to the west to Australia to the east. The Indian Ocean is connected to the Pacific Ocean on the eastern side, near Australia.

Southern Ocean

The Antarctic Ocean is the sea that surrounds the Antarctic and is occupied by the Antarctic Circumpolar Current, and usually refers to the sea south of latitude 60 degrees south. Part of the Antarctic Ocean is covered with sea ice, the range of which varies from season to season. The Antarctic Ocean is the second smallest of the five oceans.

Arctic Ocean

The Arctic Ocean is the smallest  oceans. . It borders North America in the Western Hemisphere and Scandinavian Peninsula and Asia in the Eastern Hemisphere. Part of the Arctic Ocean is covered with sea ice, the range of which varies from season to season. Some of the authorities on the road consider the Arctic Ocean to be part of the Atlantic Ocean rather than the Ocean and call it the Arctic Mediterranean Sea or the Arctic Sea. This is because the surrounding area is mostly land and does not exchange much seawater with other oceans.