At ten o'clock in the evening, for this relatively traditional town, there are very few people near the coastline, let alone the rocky areas far away from the beach.
Bi Fang stood on the towering cliff. Looking down from his position, the black and gray sea surface undulated, and the tens of millions of tons of sea water slowly rose and then gradually deflated, as if there was a terrifying sea beast stirring up the waves underwater.
, stir up trouble.
Waves several meters high crashed on the cliff below, and the light of the lighthouse in the distance swept monotonously across the sea.
With the help of Mandy and Keke, Bifang struggled to put on the diving suit and duck fins, and then took a detour from the bottom of the cliff into the shallow sea.
In this operation, Bifang and Mandy were responsible for installing underwater cameras, while Keke was on guard and sentry duty on the shore.
Mandy put on her goggles and joked: "I thought you were going to jump directly from the top, like the protagonist in the movie, jumping from the cliff into the sea and escaping death."
"You seem to have some misunderstanding about me."
Bi Fang bit the breathing valve and rolled his eyes.
It's not a live broadcast, and the situation is not critical. Firstly, it is not pursuing a sense of picture. Secondly, it is unnecessary. Only fools would take the risk of jumping into the sea. Wouldn't it be nice to just go into the sea?
"I'm sorry, you've always given me the same feeling, like...well, that kind of personal hero movie?"
"If you have time to talk about this, why not save some energy and go into the water? We only have two oxygen bottles, and you are not a Bayao person." Bifang said no more and jumped into the sea.
In order to make it easier to carry supplies, the two of them carried not many oxygen bottles, only two per person, which required them to make a quick decision.
"Bayao people? What are they?" Mandy suffered the disadvantage of being uneducated again.
Bi Fang didn't explain and swam directly into the water.
Human potential is really a mystery.
Zhang Shun, the "white stripe" in the classic "Water Margin", and Jiang Ping, the "river rat" in "Three Heroes and Five Righteousnesses", can lurk in the water for several days. Even heroes like Li Kui and Bai Yutang were dragged in by them.
Even if you fill your stomach with water, you can only change sides and abandon your armor.
Hiding in the water for several days and nights was an exaggeration by ancient literati.
Without diving equipment, the average person can't lurk in the water for more than two minutes. Even Bifang now can only move for about five minutes without any auxiliary equipment.
However, the Bajau people living in Southeast Asia only wear a pair of goggles and without other equipment, they can dive into the sea water dozens of meters deep to fish and collect pearls. The diving time is more than 5 minutes, and sometimes even as long as more than ten minutes.
minute.
With this ability, the Bajau people have lived on boats on the sea for thousands of years, made a living by fishing, and rarely set foot on land.
The word "Bayao" means "people of the sea" in Indonesian.
It is nonsense to say that Sherpas have one extra lung lobe than ordinary people, but the Bajau people who are good at diving are indeed born with different shapes. Their spleens are 50% larger than other people.
When they dive into the water, the spleen contracts, squeezing the oxygen-containing red blood cells into the blood vessels, increasing the oxygen content of the blood by up to 9%, thereby extending the diving time.
Therefore, theoretically speaking, creatures with larger spleens have greater advantages in diving. The spleen of deep-diving seals accounts for a larger proportion of the body than other animals.
The extra-large spleen of the Bajau people is not the result of acquired diving training.
Even the Bajau people who do not dive have larger spleens than those of other races, which is determined by innate genes.
The Bajau people's pde10a gene is mutated, which can increase the level of thyroid hormone T4 in the body. This hormone can promote the enlargement of the spleen, thus giving the Bajau people extraordinary diving abilities.
Bi Fang felt that with the system's ability, he might be able to receive such a strengthening.
Maybe I will be the world diving champion in the future.
Seeing that Bi Fang had no intention of explaining, Mandy shrugged: "Hey, sometimes I really envy you for being such natural divers. People like me can only win the world championship by working hard."
"Get down here."
When Keko saw Mandy dressed neatly, he kicked him on the butt and forced him to go into the water.
There was a pop and the heavy object fell into the water.
The warm and cool seawater instantly enveloped his whole body. Bifang opened his eyes and turned on his headlight. His field of vision was filled with the silver reflection of bubbles.
Bi Fang tightened his waist and abdomen, moved his whole body up and down like a swimming fish, and dived into the water quickly without even stepping on duck webs.
What does diving feel like and why do you like diving?
The answer may be different for everyone.
Some people like the colorful and different creatures in the sea.
Some people like the weightless feeling of neutral buoyancy.
Some people enjoy drift diving with the current.
Some people like to explore historical ruins under the dark sea
Or simply pursuing excitement...
But for Bifang, there is a large amount of land on the earth that can be traveled, and more than 70% of the oceans have never been set foot by many people.
Diving gave him a way to explore such a new world.
Maybe, this answer is enough.
It's very quiet underwater.
The only sound that can be heard clearly is perhaps the sound of bubbles exhaled by his own breathing.
In the ocean at night, there is no direct sunlight. The flashlight can only illuminate a distance of six or seven meters, and the surrounding area is dark.
Under water, all human sensory abilities will be reduced, visibility in the water is very low, the nose is covered by a mask, you cannot speak, and you cannot hear any sounds.
The light beam swept across, and the tiny silverbait swam away quickly, leaving behind a piece of bubble water.
Mandy rarely had such an experience, or had never experienced it before, performing some kind of mission like a special forces soldier. Even though he had dived thousands of times, he still felt an indescribable emotion floating in his heart.
At the same time, what surprised him even more was Bifang beside him.
It was obviously dark all around, but the other party seemed to have opened an extra pair of eyes, and was even able to avoid the coral reefs that had not yet appeared in the light!
Mandy was very sure that ten seconds ago, Bifang avoided the coral reef that had not yet appeared!
Damn it!
Bi Fang didn't know Mandy's inner thoughts, but he did have an extra pair of "eyes."
The electromagnetic induction of sharks is so damn useful in the sea!
In the 1960s, scientists used sensors to mark sharks, allowing humans to learn the speed, location and other information of sharks for the first time.
But what surprises scientists the most is undoubtedly that many sharks can accurately find their way in the deep sea where they can't even see their fingers.
The reason is the shark's magnetic induction ability.
There is a tiny protrusion on the shark's head that can sense the weakest changes in the underwater electric field.
There are some small magnetite particles in their bodies. These particles are very similar to the material of compasses and can keenly feel the earth's magnetic field.
Since a certain ocean survival mission, Bi Fang has also successfully possessed this ability. Of course, it is impossible to compare with the shark itself.
But no matter how weakened it is, the power of this ability cannot be denied.
It's just that Bi Fang, who is on land, usually finds it difficult to feel the help brought by shark electric induction. He can only barely use the water molecules in the air to sense the activities of living organisms about half a meter around him.
But in the sea, this function instantly increases dozens of times. Bi Fang is like a radar, able to clearly reflect everything around him in his mind.
The lamppost above his head is completely unnecessary. He can feel any situation within ten meters!
There are many small fish living on the coral reefs on the seabed. With the help of these biomagnetic fields, Bi Fang can easily sense the existence of rock walls and reefs and avoid them in advance.
Such behavior falls in Mandy's eyes...
It turns out that you are not Superman, but fucking Aquaman!
After sinking more than ten meters, Bi Fang's body felt a little cold.
Maybe it's still warm here during the day, but now, the sea water is gradually cooling down.
The resistance of the water is great, but this cannot stop Bifang and Mandy at all.
Both are good swimmers and divers.
This is the first time for most people to dive underwater. This unfamiliar environment and feelings can indeed make people very nervous.
Not only is it a psychological factor, it is also a physiological reaction.
The best divers in the world, such as New Zealander William Trumbrey, can dive to a depth of 100 meters in one breath.
But even in 10 meters of water, human lungs will be compressed to half of their normal size. In 100 meters of water, human lungs are only as big as two baseballs.
The reason why athletes like Trouble can complete such deep dives is because humans have an innate ability called the "mammalian diving reflex."
This physiological reflex also has a more poetic name, called "the master switch of life."
The moment a person buries their face in the water, various physiological reflexes are triggered in the brain, lungs, heart and other organs.
The deeper you dive into the water, the more pronounced these reflections become, eventually triggering a physiological change.
The blood in the human body will begin to flow from the limbs to the important organs in the body. Under extremely deep water, the blood can even penetrate the cell walls of the organs to support the organs and protect the organs from imploding under the strong water pressure.
Moreover, as long as a person enters the water, his heart rate will drop significantly. Even if you exercise vigorously in the water, your heart rate will be slower than on land. This means that people will consume less oxygen in the water and can
Stay longer.
This is the real reason why humans can dive deeper than 100 meters.
"Haenyeo", an ancient profession in Japan and other places, conducts deep diving by turning on the "master switch of life".
At ten meters deep, the first photography line can be laid out.
Bi Fang opened the bag he was carrying, made a gesture to start action, and threw a stone-shaped camera to Mandy.
The two men gathered around the rock formation and began to install it.