When we spoke of the ocean, we are speaking of the marine water, that covers the majority with the terrestrial space, and also we called the oceans to him to its subdivisions. These subdivisions correspond to the Atlantic Ocean, the Pacific, the East Indian, the Arctic and the Antarctic.
It is thus, as the ocean covers 71% with the terrestrial surface. That is, almost three quarters, of the globe. The greater depth of the ocean, reaches the 11 kilometers, in the grave of the Marianas. The average depth, is of 4 kilometers.
It is thus, like the ocean, is greatest of the habitat, that exists in the Earth. In fact, when referring us to the same, we are speaking of more than 1,400 million cubic meters of salt water. Therefore, the amount of species that can get to inhabit the ocean, with tamañas will be able to be imagined proportions. , It is even known that until today, certain marine species exist that they live in the most extreme depths, which not yet have been registered by science or seen by the human eye.
And it is that to cross the ocean, always it has been a complicated matter for the man. Due to the high marine depths, the human being, without equipment protects that it, is not able to resist the pressure that is exerted in them. He is thus, since the submarines have been developed, so that with them the depths of the ocean can be crossed. Even so, these can arrive until certain limits, since of equal way that the man, do not support the pressure of certain depths.
Greatest of the subdivided oceans, it is the Pacific Ocean. Which covers the third part with the terrestrial surface. This one extends from the Sea of Bering, in the Arctic, the North zone of the world, to the south, by means of the Sea of Ross in Antarctica. Therefore, they are more than 15 thousand kilometers of extension, from the north to the south.
The Ocean Arctic Glacier, is the one that roundup the North Pole. The surface of this one ocean, is of 14 thousand kilometers square. The Ocean Arctic Glacier, crosses the continents of Europe, America de Norte and Asia.
Also, we have to the Antarctic Ocean, which runs into with the Atlantic, the Pacific and the East Indian. The extension of the Antarctic Ocean, was defined just in the year 2000. Limits that are determined to the Antarctic Treaty, on the countries, that own sovereignty, in certain sectors of Antarctica. Countries that only must occupy those terrains, with scientific aims.
Of equal way, we have to the Atlantic Ocean. One extends from the north of the Arctic, to the south in Antarctica. It is the South Atlantic Ocean and the North. Fictitious division, by means of the line of Ecuador. This it is the second greater Earth ocean.
On the other hand we have to the Indian Ocean. The ocean that is contiguous with Asia, the Arabian Peninsula, Africa, the Malayan Peninsula, the Islands Sonda and Australia.
In diverse occasions, it is understood like the ocean, just like by sea. But this it is an error, of understanding or knowledge. Since the sea, is a salt water strip, very many smaller than the ocean. We talked about sea, when we spoke of the salt water strip, that is contiguous directly with the continents, by means of its sector or coastal edge.
The importance of the ocean, is fundamental for the terrestrial life. Without, it would not have been possible, the development of the human life. And not so single of ours, but of all the species that inhabit the Earth. It is thus, like the enormous volume of water, that composes to the ocean, it affects the terrestrial climate, since it transports heat, energy directly and interchanges gases with the atmosphere. Aside from that one, as we had mentioned already it previously, the ocean, is the fragile and complex habitat of an ample fauna and marine flora. And it is spoken of fragile, since the minimum contamination of his waters, affects breaks of the nutritional chain, of diverse marine species. It is thus, as the marine scientists and biologists understand to it, reason why with the passage of the years, the governments try to realise majors efforts, to maintain cleanings the waters that compose to the ocean.