Man has always feared the deep sea and spun around legends because of the difficulties of ships in sailing, the ancient Romans thought of the presence of fish that could paralyze the movement of ships, as the oldest believed in many myths about what is going on in the deep sea and oceans, and believed in the presence of strange wild animals Creation lives there, and even the sailors at the time did not have a real knowledge of the conditions in the deep sea and the oceans. Although the ancients knew that the wind affected the waves and surface currents, ignorance was a sign of what was going on in the deep sea, and the means and techniques had not yet been available to probe their depths.

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In 1958, waves were discovered in the deep ocean. It came as a surprise to scientists because they didn't expect to see sea-waves-like waves at these depths.

The density of deep water from the water above it is one of the causes of deep waves, and the presence of diverse terrain on the ocean floor between mountains and valleys, narrow passages, pits and protrusions generate surges when deep water currents pass through them.

If we were to describe the depths of the ocean in a few words, we would say that it is a deep, turbulent environment because of the enormous waves that prevail, the pressure of more than 500 kilograms per square centimeter that can crush any object that risks descending into it, too dark or completely dark (if you take out your hand you can hardly see it), it's almost impossible to Find in such a turbulent environment such a deep and dark pressure.

For the record, the human body is not likely to dive to more than 30 meters, after exceeding this depth increases the pressure on his body to more than 3 air pressures and this leads to the melting of the nitrogen inhaled by the diver with the air in his blood, which loses control of his body. As for the darkness of the depths begins to appear after diving to more than 200 meters, then the submarine needs lamps to illuminate the darkness around it, but the fish that live in these areas are enlightened by containing the phosphorus that shines itself, or be fish blind seeking its way and prey by sensing through its organs Sensual.

Reference :

• 1/ Willard Bascom, Waves and Beaches: The Dynamics of the Ocean Surface, December 18, 1979
• 2/ Frédéric Dumas, From Wikipedia, the free encyclopedia

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