Pressurization, this time the target is a depth of 400 meters underwater, which is almost the ultimate depth that can safely conduct saturation diving. Ling Hao and the others are no strangers to this depth, but for Professor Levins’ team it is It was the first challenge, and a group of students seemed extremely excited. However, after a while, they began to suffer from ear pain due to the increased pressure. Ling Hao had to suspend the pressure and let Jiang Mingyu help these people do activities to balance ear pressure.
The "Stone Crab" carried the "Pippi Shrimp" and another micro-submarine that had just been repaired and was temporarily named the "Softfoot Shrimp", left the rock platform, and began to slowly dive into the depths of the blue hole.
The sea water is blue and clear, with few floating objects. As the depth continues to increase, the blue color becomes deeper.
"Everyone, please note that there is an unknown object running across the cave wall below, 109 meters long, cylindrical, and about 5 meters in diameter. We will take evasive action." Shi Si, who was driving the "Stone Crab", said on the loudspeaker.
Everyone came to the porthole and planned to take a closer look at what it was. Gradually, a huge black object appeared in front of everyone's eyes. It was a sunken submarine. In addition to the clearly visible "022" hull number, there were several eye-catching large holes on the boat's body. At a glance, it was clear that it had been sunk. Shot by naval guns.
"Damn, this is an 'Iraqi' submarine from the island country during World War II. How come it appears here?" Tian Yong, a hardcore professional military fan, said in surprise.
"This is Guadalcanal, one of the most important naval battlefields during World War II. What's so surprising about the sunken island nation's submarine? We saw more than one sunken warship on the way here." Ling Hao was not convinced. Surprised.
"This must be the culprit for the formation of blue holes. Such a huge blue hole was only discovered recently. It obviously didn't appear too long ago. I guess it was the submarine that sank on the seabed and collapsed. It is the last thin layer of shell on the seabed that makes this blue hole see the light of day." Professor Levins said slowly.
Soon, the "Stone Crab" had reached the bottom of the 400-meter-deep cave. It was pitch black, and only under the illumination of the strong underwater light did it reveal its full appearance. This place is already very narrow, barely enough for the "Stone Crab" to stop. The sand is very thick, but it is very flat, like a desert, without any sense of life.
Ling Hao, Tian Yong, and Yang Xueting boarded the "Pippi Shrimp". The professor, Adeline, and Pete boarded the "Softfoot Shrimp." The two mini-submarines left the "Stone Crab" and slowly moved along the bottom of the water. The tunnel leads to the cave on the other side.
In just ten minutes, the low and cramped tunnel came to the end, and the space suddenly became clear. The scene in front of them surprised everyone. This seabed was not desolate, but it was like a cemetery. The seabed is densely covered with ivory-like "rod ammonite" shells, as well as finger-length fangs. Some have been almost buried by the sand, and some are just spread on the surface. Occasionally, you can see some fish. The human body has rotted and turned white on the sea bed, and many crabs and "rod ammonites" are vying to eat it.
"Let's go around and take a look first." Ling Hao's attitude was more cautious, steering the submarine forward, the lights constantly sweeping on the seabed, and several external cameras staring closely below, vigilantly holding anything that might be the remains of a large creature.
The "Soft Foot Shrimp" followed behind. Although it had been equipped with two more cameras and bright lights, its overall performance was absolutely incomparable to that of the "Pippi Shrimp".
After walking around, they didn't seem to find anything special. Both submarines stopped on the seabed. Yang Xueting and Peter were left on their respective submarines to be responsible for lighting and response. Ling Hao took Tian Yong, and the professor took Adeline walked out of the cabin wearing a diving suit and stood on a sea bed illuminated by lights as bright as day.
The professor and Adeline leaned over to collect samples, while Ling Hao and Tian Yong were building the "portable underwater safe house" invented by Yuan Bing. The boy sounded like he was very high-end, but in fact this thing is This is a large umbrella with a keel made of carbon fiber. It has no handle and no umbrella cloth. The number of keels is much denser than that of an umbrella, and several beams are added for firmness. The whole is semicircular, and it is completely foldable. This cover is probably not even patentable. From a distance, it looks like the thing you use to protect leftovers from flies at home.
"Yuan Bing, is this thing of yours okay? It's soft and doesn't look very strong." Ling Hao suspected that this thing was useless.
Yuan Bing was immediately unhappy and said to the communicator: "Titanium alloy is strong, can it be used? If you don't understand, don't question it first. You don't understand the strength of carbon fiber products at all, and in terms of toughness, It is even better than fiberglass. The principle of this safe house is a kind of 'flexible protection'. The simple explanation is that when a beast attacks, either let it hit the steel plate or let it hit the airbag, which will protect the people behind. The effect is the same, but the air bag is much lighter than the steel plate, right? I guarantee that unless you encounter a megalodon, this thing will definitely be effective!"
Since Yuan Bing said so, Ling Hao and the others couldn't question anything. After setting up the safe house, they went over to the professor's side to see what they found.
There are so many shells of various "ammonites" that it's dizzying, and there are also some needle-like objects as thick as a finger or as long as a palm. If these things weren't hollow, they might really be regarded as the shells of small "ammonites".
The professor said: "It seems that there are a lot of 'ammonites' here, but they can also be considered small predators. This should be the one that really maintains the basic link of the food chain here." As he said, the professor took it from Adeline. There were two small fish that had turned white and started to rot. One was obviously a common small squid, which fishermen in southern China call it "small tube". The other was a small fish with big eyes and a flat body, which looked a bit weird. Ling Hao has never met either of them.
"This squid is not a modern species. Their tentacles are much wider than modern squids, and there are barbs in the suckers. It is a standard 'Cretaceous Squid', but its size is only five times the size of its Cretaceous companions. One percent. In addition, this small fish is the most common 'longfin branch fish' in the Cretaceous ocean. It appears in large numbers in large numbers, such as 'spear-toothed fish' and 'sharp-finned salmon'. The food that medium-sized fish rely on for survival. Some of the needle-like objects you see are the teeth of the 'lancefish', some are the teeth of the 'swordfish', and some of the thicker ones are the ridges of the 'bow shark' Thorn." The professor said as he put some complete samples into a small box that he carried with him.
Tian Yong threw over a shark tooth the size of an eyeglass lens and said: "This shark is at least 4 meters long. Am I right?"
The professor took it in his hand and looked at it and said: "This tooth has been here for some years and belongs to the spiny shark."
After some investigation, no remains of reptiles were found. Under the professor's repeated insistence, the "Stone Crab" also came to this area of water. The students took turns to go out of the cabin and continue to excavate the bottom of the seabed under the protection of the "safe house". New Cretaceous species are constantly being discovered, and even some creatures that were thought to be extinct during the Cretaceous have been found. Some brand-new species that have never been discovered and that no one knows have actually appeared.
Professor Levins was dancing with excitement, and his wrinkled old face turned into a chrysanthemum with a smile. He patted Ling Hao on the shoulder and said: "Mr. Ling Hao, I think we can explore further up. After all, we have been in contact with bones and remains, and it still feels a bit out of place."
Ling Hao smiled helplessly. He knew that Professor Levins had tasted the sweetness now, and the next nine cows would not be able to hold him back. Fortunately, there seemed to be no aquatic dinosaurs here, and the danger was lower than expected. He had no choice but to take the professor up to see the living creatures, otherwise he would never be willing to do so.
"Okay, my opinion is, just take the 'Pippi Shrimp', leave Pete behind, and the five of us will slowly rise while decompressing. In this way, if we encounter any danger, even if the submarine breaks down, we can You can also go out of the cabin to deal with it. In principle, you and Adeline can only take pictures. If you want to capture live creatures, it will be done by the robotic arm on the 'Pippi Shrimp'. You don't need to go out of the cabin." Hearing Ling Hao say. They couldn't leave the cabin, and the professor suddenly became a little anxious, but Ling Hao didn't intend to coddle him, so he decided so forcefully. Seeing that he couldn't resist, the old man had no choice but to agree, otherwise Ling Hao would give up his job immediately.
So, Peter stayed behind to drive the "Soft-footed Shrimp" and watch over the students as they continued to collect biological samples on the seabed. Ling Hao and the other five took the "Pippi Shrimp" together and began to decompress and surface little by little. .
A large pit has now appeared on the seabed. The students used a sand pump to remove the surface sand and look for animal skeleton remains under the sand. A long black object appeared in front of everyone, and the light exposed the sand. The part was nearly 3 meters long and nearly 50 centimeters in diameter. The students were surprised. What kind of animal could have such a thick skeleton? And it's still black.
Until a row of English characters appeared on the black object, Shi Si, who had been drinking milk while staring at the camera screen, spat out all the milk in his mouth on the screen with a pop: "Let them all stop, that's a World War II bomb." An Allied torpedo from the era! If it explodes, we will all be buried here!"
"Why is there such a thing here?" Yuan Bing jumped up and asked.
Zuo Pengfei sighed and said: "No one can say where a torpedo that has lost its target will swim. Maybe it will land on the sea bed, fall down with the collapse, and then due to some unknown reason The reason why it moved here from the cave next door may be that during the fall, the water flow drove its propulsion system, and it relied on the buoyancy of the elastic wings to glide for a while. Don't look at me, this kind of thing has been going on for decades I don’t have the ability to dismantle the old torpedo in front of me.”
The situation below was chaotic. Ling Hao and the others had floated less than 40 meters when they also encountered trouble. It was a large "coelacanth" with a body length of 5 meters. It was covered in pitch-black scales and seemed to be a threat to "Pippi". He became very interested in the bright lights on the "Shrimp" and attacked it like a fool, causing the submarine to sway.
Yang Xueting was so angry that she turned the boat around and wanted to use the spiked iron fist on the "Pippi Shrimp" mechanical arm to hit this guy hard.
Professor Levins tried his best to stop him and said, "Do you know how precious this fish is? If you kill it, maybe there will be no Cretaceous coelacanth on the earth!"
Ling Hao said coldly: "Ashes return to dust, soil returns to soil. Even the dinosaurs have become extinct. How can it not be extinct? I only know that no matter how precious it is, it is not as precious as our lives. Xueting, do it!" it!"
