Beyond the imagination of the deep sea world-

70% of the earth's surface is surrounded by oceans, and 96% of the earth's water is seawater, so our earth is a marine planet, but human beings know very little about the oceans, no more than 5%, which is similar to human understanding of the universe. The average depth of the global ocean is about 3680 meters, and the average height of the global land is only 860 meters. Compared with land, the ocean is quite deep and wide. The deepest part of the ocean is in the Mariana Trench, with a depth of over 1 1000 meters, much higher than that of Mount Everest. Today, I will take you to know what the deep sea world looks like.

3 -30 meters underwater, the normal swimming depth of people does not exceed 3 meters, and 20 -30 meters underwater, mainly where coral reefs and aquatic plants grow.

40 meters underwater

This depth is generally the limit depth of "leisure diving". If you continue to dive after the diving depth exceeds 40 meters without strict training, you will have joint pain, spasm, dizziness and other problems, similar to altitude sickness. Isn't it interesting? This happens when people go up, and so does when they go down. The deepest swimming pool in the world is 40 meters. It is located in Montaigne, Groto, Hotel Horse, near Padua, Italy. It's a hotel for some people who like diving. Diving in this swimming pool is very safe.

70 meters underwater

Diving at this depth will make people hallucinate. Whale sharks are the largest fish in the world and usually live in this area.

Underwater 100 m

This depth is the limit depth of professional diving. At this depth, there is an octopus called the North Pacific Giant Octopus. This octopus can change color like a chameleon. It is 6 meters long and extremely large, so it was often considered as a sea monster in ancient times.

Underwater130m

This depth is the largest depth of "underwater wedding" in the world. In 20 14, a Japanese and an American, both professional divers, wanted to have a wedding that everyone else had done, so they held an underwater wedding in Thailand 130 meters and invited the priest to dive together. Of course, priests are not ordinary people, but their part-time coaches. After all, no priest is a professional diver and can sit on the ground and start at a price.

200 meters underwater

Below this depth, the light is too weak to produce photosynthesis, and there are basically no green leaves below this depth. There lives a kind of fish called octopus, which is the longest bony fish in the world. According to the data, the adult octopus can reach 1 1 m in length and is called "the dragon king at sea" by the people.

300 meters underwater

A big crab lives 300 meters away. Its scientific name is Cancer Ganzi. Its legs are particularly long, reaching 4.2 meters after deployment. Its head is very small, but its temperament is very fierce. It is called killer crab, and its meat is very delicious.

With the help of oxygen tanks and other equipment, humans can dive to a depth of 332 meters, which is a world record created by the Egyptians.

In 20 14, he dived to 332 meters in 15 minutes with the help of oxygen tanks. He wanted to continue diving, but he had to give up because he lost consciousness at this depth. Interestingly, it took him 13.5 hours to surface. Why is it so slow? Because there is not only oxygen in the oxygen bottle, but also nitrogen, carbon dioxide and other gases, he inhaled these gases into the water and pressed them into the blood. Under this pressure, there are no bubbles, but when the floating speed is too fast, the bubbles in the blood will expand rapidly, and the human body cannot withstand the explosion, so it must float slowly. Let the body adapt to the change slowly.

Submarines usually move from 300 meters to 500 meters underwater.

500 meters underwater

This depth is no longer the world of men, but the world of animals. As the largest animal in the world, the limit depth of blue whale diving is 500 meters, and its roar is particularly loud, reaching 188 decibels, which is bigger than a fighter plane, and its sound can spread 1600 kilometers.

In addition to the blue whale, there is another penguin that can easily dive to this depth. It's called Emperor Penguin, and you can swim here for 10 minutes at will. It is the most resistant bird.

600 meters underwater

There is a kind of fish living here, called big fin anal fish. Its head is transparent and there are two balls in it. These two balls are eyes, and the eyes look up, so it doesn't need to look down at all. Once caught, the fish will explode.

700 meters underwater

At this depth, where European eels live, the eel rice that everyone likes to eat is made of it. Some people think it lives in the river. In fact, eels spend half their time in the sea. When it lays eggs, it will return to the river and be eaten by humans.

900 meters underwater

King squid lives here. Its body length is more than ten meters, and its eyes are as big as an adult's head. You may think that the king squid is very rare, but in fact, there should be many king squid, but we rarely go to such a deep place and see very little. How can I feel that it is a lot? Let's keep watching.

Underwater1000m

This depth reaches the semi-deep sea area, where there is no light at all and it is completely black. There are fewer animals living from this area, and most animals will shine.

Underwater1300m

Among the sea turtles, there is the biggest one called leatherback turtle, which lives in this area. This kind of turtle shell is soft, it will also lay eggs on the beach, and then it will return to underwater 1300 meters.

There is also a terrible shark living in this area. It's called Euclid shark, also called goblin shark. The biggest feature is that its mouth and jaw are separated. When eating, the teeth inside fly out to bite the prey and then take it back. That sounds horrible.

Underwater1700m

There is a lovely thing living in this area, and it will also return to land. It is the southern elephant trunk seal, the largest seal species. Its nose is very big. Adult southern elephant trunk seals can grow to 5 tons and 7 meters in length.

2000 meters underwater

This depth is inhabited by a kind of fish called black dragon fish. This fish looks a little scary, like an alien, with fangs and Darkmouth. It has a beard under its mouth, and there is something like a light bulb under it that glows. It uses this luminous thing to catch prey.

3000 meters underwater

Below 3000 meters, enter the deep sea. The water temperature at this depth is only 1~2 degrees, which is completely lifeless. The water pressure exceeds 300 atmospheres. There are few fish at this depth, but there is a super-large creature living here, and that is the sperm whale. It can dive to 3000 meters, and there is nothing deeper than it among whales. It likes eating squid very much. King squid is soft all over. This substance is the world-famous "Long Xianxiang", so it is called the sperm whale. Then, judging by dissecting sperm whales, sperm whales all over the world will eat about 5 million king squid every year. How many squid do you think there are at the bottom of the sea?

3,800 meters underwater

There is a boat parked at this depth. Titanic, Titanic 19 12 and Jack sank at this depth. /kloc-more than 0/00 years have passed, and this ship has not been salvaged. It has been registered as an "underwater cultural heritage" in the world and cannot be salvaged. I guess I don't have to go if I want to.

4000 meters underwater

There is a kind of fish called "poisonous snake" living in this place, which is also very scary and has long teeth. Generally, fish living in the deep sea have less food, so once they bite their prey, they must not be allowed to run away.

6000 meters underwater

This depth is beyond the deep sea. A Japanese submarine named Shenhai 6500 dived to a depth of 6500 meters at 1989. Later, at 20 12, China's submarine Jiaolong dived to 7000m.

Underwater 8 100 m

This depth is the deepest place where fish inhabit. In 20 17, a deep-sea exploration team in China found a white fish at a depth of more than 8 150 meters. Then in the same year, a Japanese team found the same kind of fish in this place. This kind of fish is called Mariana snail fish. Whether there are fish in deeper places is unknown at present.

Underwater10000m

A huge single-celled protozoa was found in this place. Its body is 20 centimeters long. It has only one cell and belongs to a very, very primitive creature. So in very primitive times, single-celled organisms may be this big.

The deepest part of the ocean is located in the Mariana Trench. The deepest place is called Challenger Abyss. The depth of this place is 1 1034 meters. This depth sonar can't be measured, but it is analyzed by the sound waves of the bomb explosion. So far, there are four people who have reached this depth, and two of them reached this depth at 1960. When they arrived, they found flounder and some shrimp. The second dive to this depth was Cameron of 20 12. It is said that he saw something about 3 cm long, like a shrimp, and there was nothing else. He said that the seabed is as barren as the surface of the moon.

The last person who reached this depth was in April and May of 20 19. He dived twice in a row. He is an American undersea explorer named "Victor Viskovo" and dived into10928m. It is said that he saw nothing but a pile of garbage bags at the bottom of the sea. It is estimated that it will not be so easy to explore later.