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This time, Fang Hong didn't go into the water empty-handed, but brought two things.

The first is an underwater rope gun, which is used for self-defense, although sharks rarely take the initiative to attack humans, but what if you are unlucky and encounter the situation in Greenland again? After all, Fang Hong knew that he was unlucky, so he was ready to go into the water.

The second is an airbag that can be inflated quickly, Fang Hong hasn't tried much since he got his diving license, I don't know if he can float according to the steps at that time, if he encounters danger, open the airbag and let the airbag take out of the water.

Fang Hong floated on the surface of the water with his hands, the pressure gauge in his hand was clicked, and a set of data began to appear on the screen.

Altitude: 0, Water pressure: standard, Heartbeat: 90.

Among them, there is another data that is soaring.

That is, the lung capacity, after breaking through the 4,55 mark of the average adult, is still soaring.

In the end, until six thousand, Fang Hong exhaled and opened the recorded commentary.

"The person with the highest lung capacity in the world is 12,000, which means that his lungs can inhale twelve liters of air, and before entering the water, I used to let the oxygen content of the body reach the maximum. This is done by stopping the body movement and continuously breathing for air. ”

The second time, the spirometry count rushed to 6,500.

The third time, it rushed to seven thousand.

"My lung capacity is seven thousand nine, through recent exercise to eight thousand, it looks much stronger than ordinary people, in fact, everyone through a short period of training, there will be a surge, because modern people's bodies are in a sub-healthy state, it is very simple to restore a healthy state, but it is difficult to continue to rise, I should be born a little stronger than ordinary people's lung capacity."

At this time, Fang Hong had already bitten the ventilation tube and put his face on the water.

"It's so embarrassing, Brother Gun's count is only seven thousand, but the commentary is eight thousand."

Then, Fang Hong floated on the water: "In the diving world, there is a word called diving reflex, which means that when the skin comes into contact with water, the heart rate and the body's oxygen consumption are reduced in all aspects. The capillaries of the fingers and toes are closed and no longer supply blood, and then the limbs are no longer supplied until all the blood is supplied to the internal organs. Seals or dolphins that weigh the same as a human body have about the same lung capacity as humans, and they dive deeper because their diving reflexes control their bodies better. ”

"I wish my heart rate could be reduced by 20%."

In fact, after Fang Hong entered the water, his heart rate rose sharply.

This is another reaction because the lungs are squeezed by water pressure, and the body reflexively increases the heart rate and blood supply.

After Fang Hong tried for a while but couldn't lower his heart rate, he immediately started diving.

Shuiyou was speechless: "Brother Gun pretended to fail like this, it looks so embarrassing." ”

"And you can't shake the pot yet."

"Hahaha, Brother Gun must be very depressed."

Fang Hong was indeed extremely depressed, but if he came out of the water again to speak, he would have to prepare again.

Anyway, it's not freediving, and it doesn't matter if your heart rate is high, because as you breathe during the dive, the human body will naturally respond to reduce various vital indicators.

"It's one of the top four fishing grounds in the world, with a very diverse underwater life, salmon and an average depth of less than 100 metres."

"This season, the temperature under the sea is extremely low."

When Fang Hong dived along the rope, he kept looking around.

As long as it's not deep water, visibility should be good.

Moreover, the cave should no longer be in deep water, at most in the area between a few meters and a dozen meters.

The sea level has risen, but it has not risen as much as it has in 700 years, and there must have been some geological disasters here that caused the islands to sink.

However, the weaknesses of the voice acting narration have been exposed.

All kinds of disobedience and scene explanations, seeing some strange fish, Fang Hong couldn't explain their species and distribution to water friends.

The first time I went into the water, I didn't see anything, I didn't see any hills, I didn't see anything like coral reefs.

I saw a ghost shark.

Full screen shark, run and fly over......

Please, this is the sea, and there is no shark in the world that has the habit of actively attacking humans, and Fang Hong is wearing a dark diving suit, which is no different from a tire in the eyes of a shark.

Moreover, the ghost shark is a deep-sea shark, how can it attack humans?

It's a pity, this is a very rare shark, known as a living fossil, if Fang Hong can speak, he will definitely explain to the sailors what this is.

And the sailors who know these things are also drowned in the barrage army.

"There are four major fishing grounds in the world, Peruvian fisheries, Finland fisheries, Hokkaido fisheries, and North Sea fisheries, and this is the famous North Sea fishing ground. It is located in the temperate Atlantic Ocean with Finnish fishing grounds in the west and east, and the ocean currents bring a large number of tropical microorganisms, and the sea temperature is suitable for fish growth. ”

The visibility was sixty-three meters, and there was not a single hair nearby.

It all makes people feel that a cold wind is blowing on the live broadcast screen.

Next, Fang Hong touched the bottom of the sea at a depth of sixty-seven meters, and on a reef, the sea squirts covered with lanterns looked very beautiful.

"What are these test-tube looks?"

"Nonsense, the name looks like a measuring cup."

"Bah, I look like jelly and I'm good at cutting."

"It's a jellyfish, right?"

"Jellyfish!"

"Your jellyfish grow on stones?"

"It's over, it's over, this trip exploded, and I can't see it at all."

I only look at the picture, I can't hear the speech, and I look at the yarn.

Fang Hong held a rope gun in his hand and aimed it at a fish and fired it.

After the fish was pierced, Fang Hong put away the rope and began to float.

This time I dived, in less than two hours, I searched the nearby sea, and I didn't see any submarine hills, nor did I see relatively high reefs, and after getting the fish, I immediately began to float.

When he reached a position a few meters close to the surface of the water, Fang Hong stopped in the water, and the sailors didn't understand what Fang Hong was doing.

The audio commentary also explains the composition of the Atlantic Ocean and the distribution of fish stocks......

Coming out of the water, the comments swiped wildly for a while.

"Brother Gun, don't you hide when you see sharks? Isn't that a shark? ”

"Brother Gun, why don't the diving reflexes you said match the data on the table?"

"Brother Gun, why didn't you inhale to eight thousand?"

"Brother Gun, what is that glass tube that grows on the stone?"

"Brother Gun, what's the name of that fish with spots?"

"Brother Gun, the visibility under the sea is not bad, what brand of your searchlight is?"

"Brother Gun, what kind of fish is that school of fish just now, I can't see clearly."

"What's that sand-colored thing that moves for a while?"

"Brother Gun, what, why did you stop at a depth of five meters for three minutes before you got out of the water?"

"Did you just see that transparent jellyfish?"

"What kind of fish is this fish, is it delicious?"

"Why didn't you see crabs?"

"That underwater spider just now is so cute."

Looking at the questions that filled the screen, Fang Hong explained one by one: "That's a ghost shark, a kind of shark that existed hundreds of millions of years ago, deep-sea sharks have low attack power, and sharks in the sea generally don't take the initiative to attack people." The diving reflex doesn't always excite everyone, but it can be developed through training. I went into the water with a gas tank, so I didn't need to fill my lungs with air, which would be bad for diving. That glass-tube-like thing is a lamp squirt, and that fish is called a grouper. That searchlight ......"

At first, Fang Hong was still answering questions in detail, and then he could only cover it with one sentence.

In the end, Fang Hong couldn't speak, because the speed of the problem was too fast.

Fang Hong hugged his head: "Ah, it's going to explode, it's going to explode, it's going to ...... How stupid am I to want to do a diving special. ”

"Brother Gun, go ashore and go to Provence to see the flowers."

"Why don't you go to Interland and see the Academy of Magic."

"Why don't you go to Spain to watch the bullfighting."

Fang Hong rolled his eyes angrily and lay on the deck: "Sure enough, when the problems accumulate, it's too terrifying. ”