There is a saying in the "Star Trek" series:
The universe, the last frontier of mankind.
However, for the moment -
is not yet.
Not to mention the vast space, our earthly home has not yet been fully explored.
Today, Xiangyu wants to talk about a special documentary.
leads everyone to see a mysterious and beautiful strange world -
"Extreme Deep Sea"
The Deep Med
This deep sea documentary has excellent reputation since it was launched.
scores up to .5 on Douban.
, but there are not many people watching it at the moment, only a few hundred reviews.
Ocean has always been a mysterious field.
We have had countless imaginations about the world in the deep sea.
documentary consists of 4 world's top diving experts and marine biology experts.
conducts a 28-day uninterrupted deep dive along the French coast.
diving depth reaches 3100 meters under the sea .
Among the four team members, the most famous one is French marine biological scientist Lauren Barresta .
Promoter of world marine adventure.
constantly challenges human limits and breaks the records in the field of professional diving.
At the same time, he is also an excellent underwater photographer.
A regular visitor to National Geographic magazine.
used to spend 24 hours underwater with more than 700 sharks.
is to capture a survival battle between sharks and groupers.
This time, he will work with three other outstanding players.
captures more amazing scenes in the deep sea.
Where to find magical animals, you have to go to the deep sea.
For example, this -
looks like a reed flower from a distance, swaying gently with the flow of water.
thought it was a white flower blooming from seaweed.
I found that it was actually all of them, featherworm .
Their bodies are tubular, from which they stretch out white, feather-like tentacles for breathing and prey.
Once you sense the turbulence and danger comes, you will immediately shrink your tentacles.
can be called the marine life version of mimosa.
Another example is this -
The smaller Naval shrimp has a red upper body and a blue lower belly.
Two bright colors collide together, which is particularly beautiful and impactful.
They like to live in groups.
A large number of thin and long tentacles are intertwined.
forms the information network , which belongs to the unique group.
When the predator approaches, the information spreads rapidly through the tentacles.
and this -
The larger sunfish .
seems powerful, but there is a worry:
has no scales, and the skin and mucous membranes are often attacked by parasites.
Therefore, the favorite thing about sunfish is to find its good partner, a kind of small fish.
These small fish are flexible and maneuverable, and can always help sunfish eat the parasites that are harassing themselves very efficiently.
How happy you look at it and smile. (No)
The above are already strange enough.
But the one who left the most impressive impression on Xiangyu is the one below.
Do you still remember the illusion that the doctor faced when he first met the ancient mage in "Doctor Strange".
The palm grows on the finger, and the palm grows on the finger, an infinite fractal picture.
is too impactful and cannot be dissipated after a long time.
The creature I want to talk about next is not a illusion, but a real existence.
It has a total of , five wrist-foot , which are evenly distributed around the body.
Each wrist foot can be split into N strips. These splits from
can continue to split.
Finally, a small body, as the tentacles split and grow, becomes a behemoth.
When all tentacles are coiled, the diameter is only as big as 10 cm.
and when it is fully expanded, the body size is expanded by 10 times.
style is quite .
High-energy warning ahead! !
san value is gone wild! !
Its name is basket snake tail .
Its appearance is easily reminiscent of the snake-haired banshee in Greek mythology.
can turn all those who see them into stones.
so it is also called "deep sea Medusa ".
But after research, it was found that this organism is actually harmless.
It is related to starfish and is very common in the deep sea.
Because we know too little about the underwater world, we are surprised many times.
Human exploration of the ocean has a natural barrier.
Although we already have tools like submarine .
But it's like exploring in the mountains, you can't sit in the tank all the time and don't go out.
The exploration of the ocean also requires scientific researchers to get close contact and operate.
The best way is still to dive in human body.
In recent years, with the development of tourism, more and more enthusiasts are going to dive around the world.
includes diving certificate, and also has systematic courses.
It seems that diving has become an activity with a very low threshold.
However, these are all casual diving.
's depth generally does not exceed 18 meters underwater.
If you want to rely on your body to dive deeper, it will take a long time to do your homework.
is just like what the team in the film does:
artificial supercharge.
Below sea level, the pressure will increase by about one atmosphere for every 10 meters of diving.
When diving, divers need to increase air pressure in a special supercharger compartment in advance.
allows body tissue to dissolve more gas.
Wait until it reaches a position 100 meters underwater, then exit the warehouse and enter the water.
At this time, the pressure inside the body is about the same as the water pressure, so that you can safely explore.
This diving method is also called saturated diving.
but it also has a limitation.
The human body can withstand a fast boost speed and can adapt to the 11 atmospheres required for 100 meters underwater in a short period of time.
and decompression speed is very slow.
takes at least 5 hours to slowly float up.
If the pressure is decompressed too quickly, huge bubbles will form in the blood.
At the mildest, you will suffer from severe decompression disease, and at the worst, you will die on the spot.
This diving mission is limited.
lasts for 28 days and needs to dive twice a day.
To achieve long-term operation after boosting.
Divers do not float directly after completing their daily homework.
instead enters the high-pressure chamber, exits water with the high-pressure chamber, and lives in the cabin.
until all diving operations are completed, and another decompression is enough.
In other words, these 4 team members must live in the high-pressure warehouse for 28 days.
During these 28 days, they can only move freely only at 100 meters underwater.
Once you return to land, you have to stay in this small cabin and cannot go out.
The hard work of this saturated diving is far beyond imagination.
First of all, even if the body is always in a high pressure state.
Every time you enter the water, it will still bring a lot of pain.
Secondly, the high pressure in the deep sea causes heat to drain quickly.
will make people tremble with cold.
And at 100 meters underwater, the oxygen partial pressure also increases accordingly.
In order not to cause oxygen poisoning , divers also have restrictions on oxygen inhalation.
The gas inhaled is 3% oxygen mixed with 97% helium.
So everyone's voice became sharper and thinner, just like a minion.
needs to be tuned externally before you can roughly hear what they are saying.
But such difficulties, even risks, did not make them retreat.
from divers to ship assisting their entire work team at any time.
has used great enthusiasm to face this diving plan.
even, treat this plan as a dream.
This is the day I waited for 18 years before I waited for .
Only if you truly love can you live in this high-pressure and cramped environment for 28 days.
is enough to make people sleep in the open on a boat with simple conditions.
is enough to support such a difficult feat.
These professional divers are perfect pioneers of marine scientific research.
Human exploration of land is expanding day after day.
Whether it is the steep ridge, the mysterious swamp, or the dense jungle, it is unveiling.
But the exploration of the ocean is only 5% so far.
Since humans began to explore space, 12 people have set foot on the moon in the 1970s.
, and humans who can penetrate deep into the deepest part of the ocean, , Mariana Trench, , once lag far behind this number.
It was not until June this year that the 12th visitor was welcomed by this deepest part of the world.
The great director we are familiar with Cameron sneaked into this place in 2012.
became the third explorer in human history to dive to the Mariana Trench.
also filmed the entire process at that time and made it into a documentary " Deep Sea Challenge ".
And this is just a tiny corner of the vast secret.
71% of the blue planet are oceans.
The deepest Mariana Trench is more than 2500 kilometers long and has an average width of 70 kilometers.
It's pitch black here and the light cannot reach it. Whether
still exists something we cannot imagine is unknown.
We also face a lot of puzzles in our understanding of life.
canflies in the world, a drop in the vast ocean.
We are still too small in front of this vast world.
However, that's why.
Exploring unknown steps will never stop.
