"Teacher..."

"Why don't we go?"

A gust of sea breeze blew, and all the boys of Class 9 who had landed on the island shivered in unison.

Now this scene is beyond their understanding, and it makes them feel a trace of fear in their hearts.

Especially when I thought that my feet were stepping on hundreds of millions of lives, this feeling of fear strengthened a little again.

It's not exactly what they think!

What about the mystery of the good, and the symbol of the man who says good?

What does it mean to make such a weird thing?!

Everyone in Class Nine was obviously intimidated, but Ren Yan was interested.

"Let's go? Why go? ”

"Weren't you quite excited before?"

Ren Yan looked up at these cowardly and unwanted guys, his face full of disdain.

Everyone in Class 9 was speechless for a while:

"Not a teacher..."

"Is it appropriate to say these words now with that cautious expression on your previous face?"

"Didn't you still coax you before?"

"Why are you so brave now!"

"Hey, I didn't call it cowardice before, it was called stability~" Ren Yan glanced at them: "I didn't know how this place came about before, and I had the most basic fear of nature. ”

"But now that I know how this thing came about, why bother?"

Hearing this, everyone in Class 9 was confused:

"Do you know how this place came about?"

"Are you sure this thing isn't some kind of cult shrine?"

"All these sea creatures were sacrificed?"

“......”

When the words of Class Nine fell, Ren Yan was speechless for a while, and covered his forehead quite melancholy:

"You guys have a lot of imagination, I don't mind..."

"But can you have some common sense?"

"It's the real world, and you haven't crossed over? What do you think?! ”

"And how did this thing come about?" Class 9 continued to ask, "Also, what is this unlucky-looking pink object?" ”

"It's really not the flesh and blood of this island?"

When the words fell, the boys in Class 9 also pointed to the pink that was dug out by Ren Yan.

Although their teachers said that it was okay here, they were still a little inexplicably cowardly.

"This is a coral... Look at you who haven't seen the world. Ren Yan responded speechlessly.

Class 9 was stunned: "Coral?!" ”

"No, even if this thing is pink, how can it be so bright!"

"After all kinds of feng shui and sun exposure and the invasion of marine life, the coral should have some traces of decay a long time ago."

"There's obviously no trace of this thing."

"That's because it hasn't been harassed at all, and it's been since the dawn of the fight." Ren Yan continued to dig with the shovel a few times until a few branches were exposed.

It was only to prove to Class 9 that this thing was a coral:

"Coral is a combination of calcareous bones secreted by polyps, mostly red, white and black, which is a wonder in the sea and home to many fish."

"It mostly grows in the gentle place of 100-200 meters on the seabed, and the highest known height is about 12 meters."

"Firm but lacking in toughness, mostly used as decorations."

"That's the basics of corals."

"All things considered, the appearance of corals here is a bit unexpected but reasonable."

After briefly explaining the characteristics of coral, Ren Yan inserted the shovel into the ground at will.

Everyone in Class 9 was stunned, but then they wondered:

"No, Teacher Ren..."

"We've checked before, and the depth of the Bering Strait is only about 42-53 meters, which is not suitable for the growth of corals at all, if it is really according to what you said, how can there be corals in this place?"

"So, eighty percent of this coral is alien." Ren Yan shrugged.

But everyone in Class 9 was still puzzled for a while.

Seeing this, Ren Yan began to give hints:

"Think about it, why is there such an unnatural island here, not to mention that it has not been discovered by various countries, and it is so close to the sea."

"And why is there a residue of all kinds of marine life in these soils, which makes the land fertile?"

"The most important thing is why this island is like a rootless island that can shake with the surface of the sea."

"These points are not the phenomenon that a normal island should have."

When the words fell, Niu Pu narrowed his eyes thoughtfully: "You mean. This thing actually came up from the bottom of the sea? ”

"But how could this thing go up, it doesn't make sense..."

"Why not?" Ren Yan looked at the other party with a smile: "If you can give it an upward force, according to the current density of this island, it shouldn't be a big problem to rise from the sea." ”

"It's just that it's definitely not under the sea."

"But even so, the dirt on it explains, and why it floats, but the coral still doesn't make sense..."

Hearing this, Li Cheng also used his brain.

The rest of the group nodded, still a little puzzled by this.

However, Niu Pu was a little abrupt: "Actually, there is nothing unreasonable." ”

"Can't corals grow here, can't they grow anywhere else?"

"Teacher Ren also said just now that this coral may be a foreign object."

"If this hypothesis is true, the problem of corals will be solved."

"As for how the corals got here, it should be transported if nothing else."

"As for how to transport it, it must be a ship~"

"And now it's up to the surface, which means ..."

"Down here, there could be a shipwreck?!

Wang Bo's eyes immediately lit up.

I couldn't help but feel a little excited.

Shipwreck, I've heard of it and I've never seen it!

Niu Pu nodded with satisfaction: "Anyway, that's what I think, only in this way can I barely make sense." ”

"But... This thing is outrageous, isn't it, is there such a coincidence in the world? Li Qi muttered: "A ship passed through the Bering Strait and happened to sink here." ”

"And then there happened to be a coral in the boat, and this coral happened to continue to grow, and finally we happened to find it?"

"And isn't that a bit too big for coral?"

"Don't you think it's too much of a..."

"Isn't that?" Ren Yan shrugged his shoulders indifferently: "There are no wonders in the world, and all kinds of coincidences will always happen after a long time." ”

"It's like how this place floats."

"Instead of caring about these things, let's test our guess~"

When the words fell, Ren Yan looked at the group of students who were suddenly confused and a little confused.

I added secretly in my heart.

I don't want to believe it, but this kind of thing can happen through this kind of thing, is there anything in this world that can't happen?' ’

Then he turned his head to look at Li Qi:

"And who told you it's hard for corals to keep growing?"

"Corals are not living things, as long as there are polyps that can continue to secrete calcareous bones, they can continue to grow."

"If there was a piece of coral, it would have been more likely."

"Besides, who told you that such a big piece would be coral?"

Saying that, Ren Yan clapped his hands, attracting everyone's attention:

"In short, you can doubt anything, but you must not be surprised by anything, you just have to remember one thing."

"If you use your curiosity and scientific methods to explore the unknown, you will eventually get the answers you want."

"But before you get an answer, bold assumptions are also an essential link~"

"Now that we've done the hypothetical part, what do we do next?"

As he spoke, Ren Yan glanced around his students again.

A few who reacted quickly immediately gave their own answers:

"That must be a verification!"

After that, they immediately rushed back to the ninth class, changed their outfits to go to the sea, and after warming up, they prepared to go down with a mengzi.

The style of painting changed from a timid weak man to a reckless man who didn't say a word.

let Ren Yan not relax for a long time.

It even reminded him of an essay exam question from a long time ago.

Is it the ignorance that is fearless, or is it ignorance that produces fear?

This question has never been clear to Ren Yan.

But when they really wanted to go to the sea, Ren Yan, who had just woken up, still pulled them back:

"Go crazy, you guys!"

Ren Yan looked angrily at these few people who boasted of being good at water, and there was a strong sense of reprimand in his unkind tone.

Several people were stunned for a moment, and touched their necks with some embarrassment: "Aren't we excited, and our previous speculation is not to go into the water..."

"That's not the case, is it..."

"Exploring the bottom of the sea, with your current equipment, is almost like sending you to death."

"It's hard for you to even think about warming up!"

"But don't you feel cold?"

Looking at the thin full-body swimsuits of several people, the corners of Ren Yan's mouth couldn't help twitching.

Hearing this, several people shook their heads: "It's okay..."

"It's daylight now, and the temperature is still above zero..."

“....”

'Damn, the young man's firepower is strong!

’

'Is the temperature still above zero?!' ’

Is this the courage of young people? ’

I don't know how many times this is, Ren Yan really wants to cover his speechless face with his hand again.

But think about it, or give up.

Instead, he began to warn his students not to make such a scary move.

After a brief 'exhortation', Ren Yan brought the topic back to the shipwreck.

And a feasible implementation plan is given:

"You remember, you want to go to the bottom of the sea later."

"It's not just about warming up, it's about using diving gear."

"Without this set of equipment, ordinary people can already play with their lives if they dive four or five meters, understand?"

"But teacher, we won't dive deeply..."Putting on his clothes again, Qingdong, who had recovered his confidence to a certain extent, spoke weakly.

Ren Yan immediately rolled his eyes: "Can't you learn something that you can't learn?" ”

"And it's not that hard."

After the words fell, Ren Yan got on the ninth class number again, and after a while, he pulled a package and walked down.

When Ren Yan opened the package, everyone in Class Nine was stunned.

Fins, a breathing mask, a full-length swimsuit that looks rather thick, and an oxygen tank marked 2L.

This set of equipment made everyone in Class Nine stunned.

When did your teacher buy these things?

As for Ren Yan, after taking out his equipment, he immediately waved his hand and said proudly:

"Come on, come on, let's learn to dive today!"

"If you want to explore the bottom of the sea, you have to start with a deep dive!"

......

Deep diving.

A high-class posture for swimming.

It is often regarded as one of the must-learn skills by some swimmers.

At the heart of it is the depth of the dive.

Some people who have undergone professional training can even dive to a depth of four or five hundred meters, where they can experience the limits of the human body.

However, Ren Yan didn't intend to teach his students like this at all.

Just take a look at the bottom of the sea, there is a depth of fifty or sixty meters.

Of course, the most important thing is that after diving four or five hundred meters, Ren Yan felt that he couldn't do it even if he knew eighty percent of his skills.

It's not just skill, it's talent.

A gift that can compress one's lungs infinitely.

So far, what Ren Yan knows is that the only people who can do this are those who make a living from it.

For ordinary people, the limit distance seems to be more than 200 meters.

"Alright, all of them, look up to me!"

To a certain extent, Ren Yan, who avoided the students wearing deep diving equipment, stood in front of his students again and began to explain about deep diving.

"Deep diving, in fact, is not fundamentally different from your usual treading water."

"It's just that the surface of the sea is replaced by the middle of the sea, and the techniques used are basically the same."

"Maybe it's even simpler, because this time you'll have fins and other tools that can provide a powerful boost."

"The only thing to pay attention to is that there are only three points."

"The first point is the wearing of the equipment."

"The exposed parts of the wrists and ankles must fit your skin as closely as possible."

"The second is the fixation of the fins, if this thing really falls off at the bottom of the sea and can't be saved, then the other flipper must be removed as well."

"Otherwise, it has a high chance that your body will be out of balance, and some unnecessary accidents will occur."

"But the above two are trivial."

"The most important thing is the choice of oxygen tank and mask."

"Oxygen tanks for deep diving are generally between 0.6 and 60 liters, and the material is usually made of lighter aluminum."

"But even if it's aluminum, there's a big difference in their overall weight, and that weight will make it difficult for you to dive in."

"So, be sure to choose the oxygen tank that best suits your physical condition."

"Don't think that you can stay in the sea more time because you have a large capacity, it's very dangerous."

"I won't bother to tell you more about the truth that you can't chew too much."

"As for the best position for the oxygen tank, just like me, just carry it behind me."

"Use the suction tube on the mask to connect the oxygen tank to achieve the purpose of spontaneous breathing, and similarly, inhale through the mouth and exhale through the nose."

"If the suction tube ruptures halfway, you have to complete the ascent as soon as possible and replace it with a new suction tube."

After that, Ren Yan showed the real thing in front of everyone in Class 9.

The drone also faithfully synchronized this scene to the live broadcast.

For a while, netizens even missed it a little.

They had all forgotten how long it had been since Teacher Ren had not given such a lecture.

"The second point is to dive."

"There are two main ways, the first is to use your hands up and use your own weight to dive naturally into the water."

"It's safe, but it's less efficient."

"As for the second type, it is to plunge headlong into the sea, work in the opposite direction by treading water, and send yourself completely to the bottom of the sea."

"It's fast, but it requires a lot of skill."

"If you can tread water skillfully, you can try."

"The last difficulty, which is the most important difficulty."

"Overcome your fear of the deep sea."

"In the depths of the sea, you will experience a sense of claustrophobia, and this claustrophobic feeling will make your whole body feel uncomfortable, even stiff and still."

"These are normal physiological reactions of living beings to danger, just like animals playing dead."

"But if it's really like this at the bottom of the sea, then you're in for real death."

"So for this, what you have to do is to adapt, from diving to deep, step by step, to overcome your psychological fear of the ocean."

After saying this, Ren Yan pointed to the boat:

"I've said all that's to be said, now you go to the ship's warehouse and find your diving equipment to follow me to practice."

When the words fell, everyone in Class 9 was stunned for a moment, and then rushed up to Class 9 like the wind, and found deep diving equipment hidden by their own teacher in the warehouse.

Although they don't know how many of these things their unlucky teachers will buy.

But they kind of know where the teachers usually spend their class fees.

It's no wonder that the other party's class fee always starts at tens of thousands, depending on the quality of the diving equipment, and I also know that the price is expensive.

Unlike the other students, they happily chose the equipment that suited their body shape and ran back to this strange island.

Ah Wei looked at the equipment in his hand, and there was only one thought left in his mind.

"Do you have to talk to your teacher..."

He doesn't mind buying things, but does he have to talk to him about the type of supplies he buys and the amount of money he spends...

Otherwise, how will I keep accounts in the future?!

......

Ignoring the entanglement in Ah Wei's heart.

After confirming that there is no major problem with this island, the teacher is ready to take the students to dive deeply.

All the people of Class 9 gathered on this small island.

In an instant, the island was in danger of capsizing.

In the end, Ren Yan could only helplessly let the people in Class 9 practice in batches.

After the first batch of students put on their equipment, Ren Yan immediately jumped into the water, followed by the students.

After checking that there was no problem with the equipment, Ren Yan asked the students to snorkel and observe first, and then plunged into the sea water by himself.

Only the people of Class 9 were left staring at each other in the seawater, and after a while, they snorkeled helplessly to observe.

We're all geared up, and that's it?

The students were slightly unconvinced...

However, looking at them, I feel that it is actually a bit beneficial to not dive for the first time.

Not long after their teacher sneaked in, they saw a school of fish swaying past their teacher.

Although it didn't seem to be dangerous, they still felt that this scene had to be an accident, and if it wasn't handled well, something might happen.

It wasn't until they saw an octopus and snapped on their teacher's mask that they were sure...

This is an accident!

Under normal circumstances, how can there be octopus face output!

Thanks to the small size of this thing, otherwise it would have been enough for my own teacher to drink a pot!

When they thought that their teacher would be in a hurry, Ren Yan ripped off the octopus with his hands and threw it to the other side.

The octopus immediately kicked on all eight legs and disappeared.

Immediately, Ren Yan went around a few more times, and after successfully diving to the bottom of the sea, he began to float towards the sea.

After a while, he resurfaced with his head raised.

The people of Class 9 immediately gathered around, intending to listen to their feelings.

And Ren Yan just waved his hand, saying that there was no problem, as long as they followed what they just said and did, and gradually completed the sneak in, it would not be a big problem.

And because the depth of the ocean here is relatively shallow, the lack of light that Ren Yan is most worried about is not very serious.

At least after going deep into the seabed, the surroundings are still faintly visible.

It's very different from the claustrophobic environment of the real deep sea.

Theoretically, there is no problem with your own students.

After saying this, Ren Yan took off his mask and wiped his face, adding, "Oh, that's right. ”

"There's one more thing you need to pay attention to."

"Try to be as gentle as possible in the deep dive."

"The creatures in the sea are very vigilant, and if they are alarmed, they will probably attack."

"Just like the octopus I just met."

"If you don't want to be ridden by an octopus in the face, you have to put away your active mind and think of yourself as a big fish."

"That way, it's not a big problem."

"If you do encounter dangerous giant sea creatures, the oxygen tank behind you is a small bomb, which may be able to save you at a critical time."

"At that time, remember to use it."

"But the sea is safe, and there are no too large marine life."

As he spoke, Ren Yan showed a harmless smile from humans and animals.

It made the hearts of everyone in Class Nine tense for no reason.

They always feel that their teacher is scaring them, but they think that it can really happen...

Are there fewer strange-looking creatures in the ocean?

But in this way, I can't dive anymore...

When everyone's expressions were entangled, Qingdong, who had the best water nature in Class 9, plunged into the sea with a mangzi.

No matter what the others do, he wants to go to the sea anyway.

And they also saw it just now on snorkeling, there are no large creatures in this sea, and I don't know what their classmates are afraid of.

In the shocked eyes of everyone in Class 9, Qingdong had already dived about five meters.

As my teacher said, deep diving is not difficult.

It even feels a little easier than snorkeling.

It is also necessary to consider the situation that the snorkel accidentally gets into the water or if you completely enter the sea and cannot breathe.

But deep diving doesn't take that into account at all.

The connection between the snorkel and the mask is perfect, as long as you don't take off the mask, there is basically no water inflow, and the oxygen is completely sufficient.

Except that the light here is not abundant, there is no essential difference from the land.

As for the claustrophobia and fear that the teacher mentioned earlier?

Qingdong didn't feel it at all, but it was better to say that what he felt at this moment was a real blend of water and milk.

It's time to see small, colorful unknown fish swimming past you.

Qingdong had an indescribable joy in his heart.

Time passed slowly, and everyone in Class 9 was snorkeling and watching Qingdong's movements.

Only Ren Yan and Qingdong infiltrated together, falling not far away to protect secretly.

Even if there is no danger in this sea area, Ren Yan is still more worried about accidents.

Qingdong's speed was very fast, even faster than his own speed just now.

It only took about six or seven minutes for him to get to the bottom.

At the moment when he was close to the bottom, he controlled his body to turn upside down, and stood firmly on the bottom of the sea.

Fluffy and dense.

It's like the touch of that island.

'It seems that Mr. Ren's guess still has some truth...'

Qingdong thought secretly in his heart.

The figure began to swim around non-stop.

He also remembers the reason why they learned to dive.

After a while, Qingdong's figure stagnated.

Tong Kong unconsciously magnified a few points.

Before his eyes, a ruined ship was covered in mud and sand.

There were a few wisps of debris floating around, and a few fish and shrimp carcasses.

Above the ship, a large coral statue formed a small platform with broken wood and sand.

At the upper end of the platform, there is a clear fracture mark...