Humans often look up at the stars and explore the universe, but did you know that human exploration of the earth's oceans is only 5%, and do you know how deep the oceans are? Put Mount Everest, the roof of the world, into the Mariana Trench and you won't see the top. The next content is deep-sea phobia.
How deep the ocean really is

75% of the earth's surface is covered by oceans, but not only the surface, but also the three-dimensional depth of the oceans is beyond human imagination.
40 meters, which is the deepest diving depth for the average person (there are unusual people below) who are not equipped with protective measures. Descending down to 93 meters is the depth of the wreck site of the Lusitania. This is interesting because it is 240 meters long in itself, which means that it is longer than the depth of the sinking, so if you stand up with the stern of the boat and make him tilt, it will emerge from the water.
At 100 meters, if you don't take anything with you, your internal organs will be damaged by water pressure, but this does not stop a man named Herbert from completing the freediving record at a depth of 214 meters. This guy swam to this depth just by holding his breath.
At 332 meters, this is the world record for diving done by a man named Amed Gabul. If he dives an additional 111 meters, he will reach the height of the Empire State Building.
At 500 meters, this is the maximum depth that the Blue Whale can dive, which is also the highest depth of the American Seawolf Extreme Nuclear Submarine.
At 535 meters, we can see the deepest diving depth of the emperor penguin. The pressure of humans under this water pressure is equivalent to an elephant stepping on a coin.
Forever shrouded in darkness
So further down to 830 metres deep, Dubai's Alifa Tower will also be submerged in water. Once we reach 1000 meters underwater, we begin to enter terrible territory, and the sunlight from the surface of the water cannot shine here, so the ocean below 1000 meters is permanently shrouded in darkness. The water pressure felt in this position is roughly equivalent to the pressure felt standing on the surface of Venus, which means that you can simply cool down. At this depth of the water level, if the water pressure has not yet crushed you, you can encounter giant squid, do not know whether it is delicious or not.
At 1280 meters, leatherback turtles can dive to the maximum depth.
A little further down to 1828 meters, the Grand Canyon of the United States will be flooded.
Down to 2,000 meters, there are many strange-looking marine creatures, such as the Echinacea, which is a carnivorous beast with a belly that does not allow light to enter. The only way to help you see this thing clearly is to bring a flashlight.
Further down to the depth of the 2250-meter ocean, the depth at which sperm whales and king squid often appear. Sperm whales often have suction cup marks and scars on their bodies, which come from fighting with the king squid. These fights may just happen at these incredible depths. The king squid can grow to 14 meters long, weigh 750 kilograms, and have eyes as big as a dinner plate and hooks as sharp as razors on the tentacles, so it can only be said there, good luck.
Further down to 3800 meters, the wreckage of the Titanic sank on such a deep seabed.
Creatures below the deep sea resemble aliens
A little further down, at 4,000 meters, we started to enter the deep zone of the ocean. The water pressure is staggering to 1,000 pounds per square inch, and there are many strange alien-like creatures that inhabit the area. Such as Antarctic fish, anglerfish and viper fish.
Descending to 4267 meters, this is the average depth of Earth's oceans, but there are more places in the deep ocean that are deeper than this average.
At 4,791 meters, the wreckage of the Battleship Bismarck of World War II lay on the seabed at this depth.
Diving down to 6,000 meters is the ultra-abyss zone, and you will know it very deep when you hear the name. Named after Hades in Greek mythology, the water pressure at this depth is 1100 times greater than the pressure felt on the surface of the water deep, roughly equivalent to an elephant on a stamp or a person carrying 50 Boeing 747s. Dive to these depths, and without any external protection, you will be crushed in no time. But there are still life that survive here in strange forms.
Exactly how deep the 6500-meter ocean is, reaching the maximum depth that the DSV Alvin submarine can dive. If you haven't heard of this submarine, then you must have heard of the Titanic mentioned earlier, and yes, the Titanic was discovered.
The Himalayas are submerged in the sea
Further down to 8848 meters deep, Mount Everest, the highest elevation on Earth, has disappeared into the ocean.
Then go further to the depth of 10,898 meters, where the famous director James Cameron once participated in the Deep Sea Challenger mission in 2012 to be able to dive. Dating back to 1960, two men named Donald Walsh and Jacques Picard used their submarines to reach a depth of 10,916 meters, and they spent 5 hours diving across the ocean to this depth, and they only stayed for 20 minutes as the window glass began to crack and they began to rise back to the surface.
A little further down to 10,972 meters, how deep the ocean is, is the flight altitude of civil aviation aircraft, so if you have ever looked out the window on an airplane and seen the ground, you can feel how deep the seabed you are now in. It can be seen that it is much more difficult for humans to explore the ocean than the sky.