Review
Knowing astronomy and geography means that a person is knowledgeable and knows everything. Nowadays, with the development of science, human beings have gone to heaven and earth, and the exploration of the earth and space has been on the way, and the mysteries of astronomy and geography are more and more presented.
Probes travel in space, and humans have a clearer understanding of space, but there is little information about the exploration of the ocean. Why do scientists prefer to explore farther space than the deep sea? What is so terrible about the deep sea?
How deep is the deep sea?
As we all know, the ocean accounts for 71% of the earth's area, and the earth is originally a star, and it is precisely because about three-quarters of the area is oceans that the earth's surface in the universe can show a unique azure color.
According to statistics, scientists now explore no more than 5% of the ocean, and there are countless mysteries in the underwater world waiting for us to discover and study. The ocean is a beautiful and desirable place in our eyes, with a vast ocean, blue seabed, and a variety of unknown underwater creatures.
The Mariana Trench is currently recognized as the deepest ocean in the world, and the submersibles of the continent had the opportunity to successfully sit at the bottom here two years ago, reaching a depth of more than 10,000 meters.
Just imagine, Mount Everest, as the world's highest peak, is 8848.86 meters high, and it can completely sink into the Mariana Trench, which is incredible to think about.
More than 10,000 meters deep in the sea, think about it have "deep-sea phobia", the reason why there is such an inexplicable sense of fear in the face of the deep sea, is because I don't know anything about it, and I will inevitably feel terrified and scared in my heart.
The further down the sea goes, the higher the water pressure, the less oxygen there is, and even the eye cannot reach it, which is a very harsh environment.
The average depth of the ocean is more than 3.5 kilometers, and there will be people with high hypoxia at an altitude of more than 3,000 meters above sea level, let alone in the environment of the seabed. Even so, those deep-sea animals can still live well under the pressure of their living environment.
Deep-sea research is challenging
The world below 200 meters under the sea is invisible to the naked eye, and can only be assisted by lighting tools, so low visibility makes it difficult to ensure the safety of submersibles, which greatly limits the research work of scientists.
Not only that, but the high pressure of the deep sea is a big challenge, and the pressure increases with the depth of the dive. Every 100 meters of dive, the pressure will increase by 10 atmospheres, an ordinary person, the depth of the dive to 100 is already a challenge, a professional diver, the dive to 400 meters is already the limit.
In the Mariana Trench, the pressure at the deepest point of the ocean is equivalent to that of fifty jumbo jets, and the human body cannot withstand this pressure, and can only dive through the resistance of high pressure through high-tech equipment. But then again, the Mariana Trench has been able to sit at the bottom, and the power of technology really should not be underestimated.
The temperature of the deep sea is also highly variable, with large temperature differences coming from hydrothermal vents.
The formation of hydrothermal vents is due to the relationship between crustal fractures, and the heating of magma also plays a role, and the temperature of the eruption is between 60-350 °C, which adds obstacles to the research and production of submersibles, and only high-temperature resistant materials can overcome this problem.
What's on the ocean floor?
Every year, scientists make new discoveries in the deep sea, but according to the data, it is estimated that there are still more than 1.5 million unknown species in the deep sea that have not been unlocked, and it is really difficult to say whether there are "monsters" on the bottom of the sea.
In the 30s of the last century, a creature thought to be extinct appeared in the waters of South Africa, the megalodon. The megalodon was thought to have been extinct 65 million years ago, but it reappeared 10 million years later, and the previous claims have been disproved, meaning that there is no absolute possibility of research.
Sharks are very aggressive, and at the same time, the waters they live in can be deep or shallow, and if you want to go to sea, the danger may not be far away.
Giant squid in the deep sea were once thought to be mere legends, and it wasn't until the early 21st century that researchers discovered their true form. Giant squids are up to 20 meters long, and their feet and torso are big enough to make waves in the depths of the ocean.
In addition, there are also sea snakes in the deep sea, including reptiles such as black mamba, king cobra and some species of sea snakes, and you must be careful in the deep sea, they may be ambushed in plants or algae, and their lives can be dangerous if they are not careful.
There is also a deep-sea fish in the deep sea, which can eat prey that is up to 10 times heavier than itself. As the saying goes, the human heart is not enough to swallow an elephant, and this is the case with deep-sea fish, whose prey is far more than their stomachs can handle.
In the dark depths of the sea, where darkness is everywhere, these creatures that have evolved and survived, whether ancient or not, are not easy to imagine. The deep sea is not only full of terrifying creatures, but also terrifying ocean monsters.
This low-frequency sound appeared in 1997 and is usually inaudible to the human ear. There are many theories about this sound, with scientists suggesting that it may have come from a giant creature at the bottom of the ocean or a deep-sea monster, but no corresponding findings have proved these speculations.
The deep sea is full of dangers, but it is undeniable that the ocean is rich in oil, natural gas and various rare minerals, as well as many mysteries and mysteries, its importance and significance are self-evident, but human beings know very little about it nowadays.
We should protect the deep-sea when it is rarely exploited and make rational use of its resources, rather than ignoring it and acting recklessly, and the dangers of the deep sea are also reminding mankind to be cautious.
summary
There are many dangerous creatures in the deep sea, not only those that are easily deadly, but also its own harsh environment.
The pace of human exploration of the unknown has never stopped, and it is not that they do not study the deep sea, but that the current level of ability does not reach the conditions for studying the deep sea. In the face of unknown seas, I believe that in the future, scientists will give satisfactory answers if conditions permit.
来源: 源于百度智燃谈奇闻
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