I have a sea in ancient times

Chapter 267 Dive into the Seabed (2) Four more

(The fifth watch promised, the last watch will be posted in the early morning)

In other words, when a diver descends to 10 meters, the pressure doubles completely. This sudden change will make many divers feel uncomfortable.

At the same time, this depth is also the most dangerous depth. I refuse to make complete statistics. Most diving accidents occur in the area of ​​0 meters to 10 meters.

And once you drop to 10 meters away, the light and scene will change a lot, and there is a greater probability of deep-sea phobia.

The psychology of fear will make divers panic and anxiety, leading to shortness of breath, rapid heartbeat and other symptoms. In severe cases, dizziness and suffocation may also occur.

It can be said that diving is a very dangerous behavior. Those who fish for oysters, abalone, and sea cucumbers in the sea can be said to be risking their lives to make money.

Every trip to the sea is a gamble, so it can't be a joke. Lu Hai has been using high-definition underwater cameras to monitor every move of primitive man No. 6.

The performance of diver No. 6 was relatively stable, but at the same time he was also confused, but the sudden movement made Lu Hai nervous.

He crawled down on the bottom of the sea.

It looked like a state that appeared after a sudden onset, and Lu Hai immediately pulled the diver up.

After pulling it up.

It was found that the diver was not seriously injured. He made that kind of action just to pray to the "great existence". After learning the news, Lu Hai was very helpless.

Just tell Xiaobai, tell him, don't stay in place, but walk on the bottom of the sea.

Lu Hai conducted the test again. This time, the main test was how primitive people would react to sharks and some large marine life.

There are relatively small blacktip reef sharks in this area. This kind of shark is relatively small, and the largest is about one meter. They mostly live in reef areas and generally eat sea fish as their main food.

When Lu Hai was snorkeling in Ma Odev, he had encountered many such sharks, they were very docile, and Youxue still hugged it and took a photo with it.

Almost 5 minutes later.

Divers No. 6 came into contact with blacktip reef sharks. Because sharks are generally more curious, four or five blacktip reef sharks swam towards No. 6.

Probably out of instinct, primitive man No. 6 picked up the harpoon in his hand when he saw the shark swimming towards him, and was about to attack. This harpoon was given to him by Lu Hai just now.

After having a weapon.

He was indeed calmer underwater, but when faced with the sudden arrival of sharks, he was still a little at a loss, and instinctively wanted to attack.

Fortunately, before the blacktip reef shark approached, it quickly fled because of the shark repellent bracelet and shark repellant.

Overall.

It was still very successful. This time, the primitive man stayed in the water at a depth of 10 meters for a full 20 minutes.

However, compared with the old fishermen who go down for an hour or two, it is still far behind.

Next.

Lu Hai simply tested it down to 20 meters. At this depth, divers have to withstand the pressure of 3 atmospheres. At this depth, divers have to bear greater psychological pressure.

Because it is 20 meters, it is almost the height of a six-story building. At the same time, at this depth, there is still a very troublesome problem, that is, when you float up, you must not hold your breath.

Otherwise, lung explosion may occur. In 18 years, a diving enthusiast in Palau was also at a depth of about 20 meters. He held his breath and rose, resulting in lung explosion and death.

In addition to this, there is also a very scary decompression sickness, which usually occurs within 2 to 48 hours after surfacing, and there will be joint pain, numbness of the limbs, and large erythema on the skin.

Also, you are not allowed to fly within 12 hours after diving. If the diving time is longer, you are not allowed to fly within 18 hours.

Because diving inhales a lot of nitrogen, and nitrogen is one of the factors that cause decompression sickness.

In addition, the aircraft cabin usually does not add 1 standard atmospheric pressure, but about 0.6 atmospheric pressure. When the body passes through two air pressures with a relatively large difference in one day, there is a high probability of decompression sickness.

Of course, Lu Hai does not need to consider the problem of primitive people flying by plane, but he still has to pay attention to the symptoms and reactions of diver No. 6. Once joint pain occurs, oxygen inhalation treatment must be performed immediately.

When carrying out the depth of 20 meters.

Lu Hai considered giving up, but after thinking for a while, he finally decided to take this step. No capitalist would stop him because of kindness.

Food delivery companies have never forced food delivery workers to run red lights or motor vehicle lanes because they squeezed delivery time.

Pharmaceutical companies will also not reduce the cost of medicine because of poor patients.

Lu Hai feels that when he has more and more wealth, his concept has quietly changed. It feels like a natural change, and he doesn't need to be taught by others, and his instinct will change.

before diving.

Lu Hai asked the divers to wear a set of thermal underwear. Even in summer, it is very cold at a depth of 20 meters. If they work for a long time, there is a high probability of cramping.

After getting ready.

Lu Hai drove the fishing boat to the designated location and conducted the first 20-meter dive test.

Lu Hai did not let the diver dive to a depth of 20 meters at one time, but slowly put him down, and at the same time, the underwater high-definition camera monitored every move of the diver.

10 meters, normal.

15 meters, normal.

20 meters, normal.

According to the data transmitted from the instrument on the underwater camera, the pressure on the seabed at a depth of 20 meters is three standard atmospheres, and the temperature has dropped by more than ten degrees.

Divers No. 6 actually walked on the seabed at a depth of 20 meters. For Lu Hai, this should be the best thing today.

The first primitive man drawn in the lottery showed such a strong diving talent. So far, he has not shown any adverse reactions, and even the common ailment of headache has not appeared.

This made Lu Hai full of confidence in the next test. Maybe these primitive people can really beat modern people in diving.

Even Lu Hai felt that even without these diving equipment, after they learned how to swim, they might be able to take a walk on the seabed easily.

Lu Hai looked at the mission countdown.

[Mission countdown: 4 days, 12:10:39]

Time is running out.

It is still very difficult to find white jade sea cucumbers in this vast sea area. Lu Hai also thought about it, pulling the underwater high-definition camera to search for it on the bottom of the sea.

It turned out that this was simply impossible. If the boat moved, the underwater camera would be in a shaking state, making it difficult to see things on the bottom of the sea clearly.

Not to mention finding white jade sea cucumbers that are only about ten centimeters long, the safest way is to use primitive people to conduct a blanket search of the areas where sea cucumbers grow.

(End of this chapter)