Human beings cannot yet reach the deepest part of the ocean floor, because the deep ocean has super pressure and insufficient light, making it much more difficult than exploring space.
According to data, at a depth of 11,000 meters under the sea, the pressure per square centimeter can reach 1,100 tons, which is equivalent to putting three tanks on your finger. Moreover, if people go into the water together, they have to ensure that the pressure and temperature in the diving chamber are maintained at normal levels. This is very difficult with current technology and safety cannot be guaranteed.
In addition, there are many mysterious creatures on the seabed and there are unknown dangers. Ten thousand meters under the sea is very scary. Not only mysterious creatures, but also surging magma and eruptive volcanoes on the seabed will threaten submersible machines and people at any time. So humans don’t explore the deep sea.
No instrument has ever been to the Mariana Trench, the deepest part of the ocean floor ever explored by humans. Its depth is -11034 meters. In 1960, the United States' Trieste submersible dived to a depth of 10,916 meters. So far, no machine has been able to break the record.
Extended information:
1. The Mariana Trench, also known as the "Mariana Islands Trench", is the deepest known trench on the earth. The trench is located in the North Pacific Ocean On the western seabed, east of the Mariana Islands near Guam, the trench is the convergence subduction zone of two plates, where the Pacific Plate subducts beneath the Philippine Plate (or the subdivided Mariana Plate). The Mariana Trench is deeper below sea level than the highest point of Mount Everest.
2. ?China’s adventure
On June 15, 2012, someone from China visited the deep sea of ??the Mariana Trench for the first time. Those who wade into shallow water will see fish and shrimps, and those who go into deep water will see dragons. Since ancient times, the Chinese have had the dream of exploring the mysteries of the deep sea. Now, this dream is becoming a reality step by step through the Jiaolong manned submersible.
The Jiaolong is an important high-tech equipment for my country’s ocean international seabed resource survey and scientific research. The Jiaolong is 8.2 meters long, 3.0 meters wide and 3.4 meters high. Its empty weight does not exceed 22 tons and its maximum load is 240 kilograms. The maximum speed is 25 nautical miles per hour, and the cruising speed is 1 nautical mile per hour; the current maximum diving depth is 7062.68 meters.
On June 15, 2012, the Jiaolong conducted its first test dive in the Mariana Trench and successfully dived to 6,671 meters underwater. The Jiaolong conducted six test dives in the Mariana Trench ***, reaching a maximum depth of 7,062.68 meters, both of which set new records for the deepest manned diving in my country's man-made machinery.
From June 22 to August 12, 2016, my country's "Exploration 1" scientific research vessel carried out the first comprehensive 10,000-meter abyss survey in the Mariana Trench in the history of my country's marine science and technology development. Examination activities. The "Hai Dou" unmanned submersible independently developed by my country dived 10,767 meters.
This time, the "Haidou" not only set a record for the maximum diving depth of my country's underwater robots, but also obtained temperature and salt depth data for the abyss below 10,000 meters and the entire ocean depth profile for the first time. This is another milestone in my country's marine science and technology after the successful 7,000-meter sea trial of the "Jiaolong", marking the beginning of the 10,000-meter era of my country's deep-diving scientific research. From now on, the 10,000-meter deep sea is no longer a restricted area for my country’s marine science and technology community!
Reference: Baidu Encyclopedia-Mariana Trench