Chapter 542: Lurking Underwater

Chapter 542: Lurking Underwater

White foam is left behind when the sea ebbs.

At ten o'clock in the evening, for this relatively traditional town, there are few people near the coastline, let alone the rocky area far away from the beach.

Bi Fang stood on a towering cliff. Looking down from his position, the surface of the black-gray sea was undulating. Tens of millions of tons of sea water slowly rose and then gradually collapsed, like a terrifying sea beast stirring up the wind and waves underwater. , making waves.

Waves a few meters high beat against the cliffs below, and the light from a distant lighthouse monotonously swept across the sea.

With the help of Mandy and Keke, Bi Fang struggled to put on the diving suit, put on the duck fins, and then made a detour from the bottom of the cliff into the shallow sea.

In this operation, Bi Fang and Mandy were responsible for installing the underwater camera, and Ke Ke was on the shore to guard and guard.

Mandy put on the 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 narrowly escaped death."

"You seem to have misunderstood me."

Bi Fang bit the breathing valve and rolled his eyes.

It's not a live broadcast, and the situation is not critical. One is not pursuing the sense of picture, and the other is that it is unnecessary. Only fools will risk jumping into the sea. Isn't it good to go to the sea in general?

"Sorry, you've always given me the same feeling, like... uh, that kind of personal hero movie?"

"If you have time to talk about this, why don't you save some energy and go into the water, we only have two oxygen tanks, and you are not from Bajau." Bi Fang didn't say any more, and threw himself into the sea.

In order to facilitate the carrying of supplies, the two did not carry many oxygen cylinders, only two for one person, which required them to make quick decisions.

"Bajau people? What is that?" Mandy suffered from being uneducated again.

Bi Fang didn't explain and went directly to the water.

Human potential is sometimes a real mystery.

Zhang Shun, the "Water Margin" in the classic novel "Water Margin", and Jiang Ping, the "Tianjiang Mouse" in "Three Heroes and Five Righteousness", can hide in the water for several days. Drag it into the water and fill it with water, but you can only turn away.

Lurking in the water for days and nights is an exaggeration of the ancient literati.

Without diving equipment, the average person can spend no more than two minutes lurking in the water. Even Bi Fang can only move about five minutes without any auxiliary equipment.

However, the Bajau people living in Southeast Asia, wearing only a pair of goggles and without other equipment, can dive into seawater dozens of meters deep to catch fish and pearls. The diving time is more than 5 minutes, sometimes even as high as a dozen minute.

With this ability, the Bajau people have lived in boats at sea for thousands of years, made a living by fishing, and seldom set foot on land.

The word "Bajau" means "people of the sea" in Indonesian.

It is nonsense to say that Sherpas have one more lung lobe than ordinary people, but the Bajau who are good at diving are indeed born out of phase, and their spleens are 50% larger than other groups.

When they dived, the spleen contracted, squeezing its oxygenated red blood cells into the blood vessels, increasing the oxygen content of the blood by up to 9 percent, extending the dive.

So in theory, a creature with a larger spleen has an advantage in diving, and the spleen of deep-diving seals accounts for a larger proportion of the body than other animals.

The large spleen of the Bajau people is not the result of acquired diving training.

Even the Bajau who do not dive have larger spleens than those of other races, which is genetically determined.

The PDE10A gene of the Bajau people has mutated, which can increase the level of thyroid hormone T4 in the body, which can promote the enlargement of the spleen, so that the Bajau people have extraordinary diving ability.

Bi Fang felt that with the ability of the system, it might be possible to give him such an enhancement for the last time.

Maybe I will be the world diving champion in the future.

Seeing that Bi Fang didn't mean to explain, Mandy shrugged: "Hey, sometimes I really envy natural diving experts like you. Like me, you can only win the world championship if you keep working hard."

"Go down for me."

Seeing that Mandy was fully dressed, Keke kicked him in the ass and forced him into the water.

With a plop, the heavy object fell into the water.

The warm sea water enveloped his whole body in an instant. Bi Fang opened his eyes and turned on his headlights. His vision was full of silvery reflections of air bubbles.

Bi Fang tightened his waist and abdomen, moved up and down like a fish, and dived into the water quickly, without even stepping on the duck webs.

What is it like to dive and why do you like diving?

Everyone's answer may be different.

Some people like the colorful and different creatures in the sea.

Some people like the feeling of weightlessness in neutral buoyancy.

Some enjoy drift diving with the current.

Some people like to explore the historical relics of the dark seabed

Or simply seek excitement

But for Bi Fang, there are large areas of land that can be traveled on the earth, and more than 70% of the oceans are never set foot by many people.

Diving gave him a way to explore such a new world.

Perhaps this one answer is enough.

It's very quiet underwater.

The only sound that can be clearly heard may be the sound of bubbles exhaled by his own breathing.

In the ocean at night, there is no direct sunlight, and the flashlight can only illuminate a distance of six or seven meters, and the surrounding area is dark.

At the bottom of the water, all human sensory abilities will be reduced, the visibility in the water is very low, the nose is covered by a mask, and people cannot speak or hear any sound.

The beam of light swept across, and the tiny whitebait swam away quickly, leaving a piece of bubbly water in the air.

Mandy seldom has such an experience, or has never experienced it. He is like a special soldier performing some kind of mission. Even though he has dived thousands of times, he still feels an indescribable emotion floating in his heart at this time.

At the same time, what surprised him even more was Bi Fang beside him.

It was obviously dark all around, but the other party seemed to have extra eyes, and was even able to avoid the coral reefs that hadn't appeared in the lights in advance!

Mandy is very sure that Bi Fang avoided the coral reef that hadn't appeared ten seconds ago!

hell!

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 fucking easy to use in the sea!

In the 1960s, scientists used sensors to mark sharks, allowing humans to learn information such as the speed and location of sharks for the first time.

But what astonished scientists the most was the unquestionable ability of many sharks to find their way precisely in the deep sea, where they can't see their fingers.

The reason is the shark's magnetic sensing ability.

Sharks have tiny protrusions on their heads that sense the slightest changes in the electric field underwater.

There will be some small magnetite particles in their bodies. These particles are very similar to the material of the compass, and they can keenly feel the earth's magnetic field.

After a certain ocean survival mission, Bi Fang has also successfully possessed this ability. Of course, it cannot be compared to the shark itself.

But no matter how weakened it is, it cannot deny the power of this ability.

It’s just that Bi Fang, who is on land, can’t usually feel the help of the shark’s electric induction. He can only barely use the water molecules in the air to sense the biological activities about half a meter around his body.

But in the sea, this function increased dozens of times in an instant, and Bi Fang was like a radar, which could clearly reflect everything around him in his mind.

The lamp post above his head is completely redundant, 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 biological magnetic fields, Bi Fang can easily sense the existence of rock walls and reefs and avoid them in advance.

Such behavior falls in the eyes of Mandy.

It turns out that you are not Superman, but the fucking Aquaman!

After sinking more than ten meters, Bi Fang's body felt a little cold.

Maybe it is still warm here during the day, but now, the sea water is gradually cooling down.

The resistance of the water is great, but it does not stop Bi Fang and Mandy at all.

Both are good swimmers and divers.

Most people dive underwater for the first time, and this kind of unfamiliar environment and feeling can really make people very nervous.

Not only psychological factors, but also physiological reactions.

The world's best divers, such as New Zealander William Trubury, can dive to a depth of 100 meters in one breath.

But even in water 10 meters deep, the human lungs will be compressed to half of their normal volume, and in water 100 meters deep, human lungs are only as big as two baseballs.

The reason why athletes like Trubury can complete such deep dives is that humans have an innate ability called the "mammalian diving reflex".

This physiological reflex also has a more poetic name called "life master switch".

When a person buries his face in the water, various physiological reflexes are triggered in the brain, lungs, heart and other organs.

The deeper you dive, the more pronounced these reflexes become, eventually triggering a physiological change.

The blood in the human body will start to flow from the limbs to the vital organs in the body. Under extremely deep water, the blood can even penetrate the cell membrane of the organ to support the organ and protect the organ from imploding under strong water pressure.

Moreover, as long as a person enters the water, the heart rate will drop significantly. Even if you exercise vigorously in the water, the heart rate will be slower than when you are on land. stay longer.

This is the real reason why humans can dive deeper than 100 meters.

An ancient occupation "sea girl" in Japan and other places conducts deep diving by turning on the "master switch of life".

Ten meters deep, the first photographic line can be arranged.

Bi Fang opened the bag he was carrying, made a motion gesture, and threw a stone-shaped video camera to Mandy.

The two surrounded the rock formation and began the installation.