What is an Ocean?

Ocean is defined as the accumulation and great extension of salty water on planet Earth. This covers 71%, that is, more than three parts of the entire globe. In the same way, the ocean is specifically named as the extension of water that separates two or more continents from the others. For this reason, the Atlantic, Indian and Pacific Oceans are the largest, and the Arctic and Antarctic as the smallest.

For their part, these large masses of salty water are characterized by being formed from two layers. The first one, known as the surface layer, has a temperature of between 12 ° C and 30 ° C and covers approximately 20m in depth. Meanwhile, the second, called the warm water layer, is below 20m reaching a depth of 100m. In the latter the temperature ranges from 5 ° C to -1 ° C.

Also, the ocean is considered one of the main sources of sodium and chlorine in the world, the essential components to create common salt. There are also other elements such as sulfur, potassium, magnesium and calcium . On the other hand, the Greek Titan that dominated all extensions of salt water on earth is known as the ocean. In particular, the Mediterranean Sea and the Atlantic Ocean, as they were the bodies of water known to the Greeks at that time.


Atlantic Ocean

It covers and has approximately 106,460,000 square kilometers of surface. It is estimated that it comprises 20% to 30% of the entire extent of salty water on Earth. For its part, it is located because it is the ocean that separates the American continent from the European and African continents.

In addition, the Atlantic can have from -2 ° C to 30 ° C in temperature, this will depend on the region in which it is located. Well, we must remember that the Atlantic Ocean is from pole to pole and meets the line of the equator.

Indian Ocean

It is characterized by covering a large part of the extension of salt water on Earth, approximately 14% with 68.55 million square kilometers. Regarding the salinity level, it has between 32% and 37%. The Indian Ocean borders the African and Asian continents, in the same way, it connects with the Atlantic Ocean, the Pacific Ocean and the Antarctic Ocean.

For its part, the temperature of the Indian Ocean is the warmest compared to the other oceans. It ranges from 0.7 ° C to 1.2 ° C, this extension of water is considered together with the Pacific Ocean as those in charge of regulating the planet’s temperature. However, due to environmental deterioration and the greenhouse effect , this regulatory function of the ocean is altered.

Pacific Ocean

It is also known as the great ocean because it encompasses a large expanse of salty water, not only in square kilometers but also in depth. In the same way, it is equivalent to approximately 30% of the entire surface of the planet, so it has approximately 155,000,000km2.

The Pacific Ocean is divided into two areas known as the North Pacific and the South Pacific, this, taking the line of the equator as a reference. In addition, it borders the American continent to the east, Asia to the north and west, and finally, the Antarctic Ocean to the south.

Arctic Ocean

It is the smallest ocean and the shallowest within the five oceans of the Earth, its location is at the north pole of the planet. In the same way, its extension covers almost 4% of the Earth’s surface, this is approximately 14 million square kilometers.

In addition, according to its location, this ocean is characterized by having an ice surface with an estimated width of 3m. For its part, North America together with Europe are the only continents that border the Arctic. Also, it meets the North Pacific Ocean and the Antarctic Ocean.

Antartic Ocean

It is also called the southern ocean, its location is at the southernmost end of the globe. Before it was considered to this like part of the Pacific Ocean, the Atlantic and the Indian; by the year 2000 it was separated from them and recognized as another ocean. For this reason, the limits of Antarctica are only the largest oceans.

For its part, it is the second with the smallest extension of water, being the largest with respect to the Arctic Ocean with approximately 20,327 square kilometers. As for its temperature, because it is located at one of the planet’s poles, specifically at the south pole, it is natural that it is low. It has a temperature of between -2 ° C to 10 ° C in hot seasons.

Examples of Oceans

  • Greater oceans.
  • Lesser oceans.
  • Atlantic Ocean.
  • Pacific Ocean.
  • Indian Ocean.
  • Arctic Ocean.
  • Antartic Ocean.

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