Sharks are one of the oldest creatures in the world, having been active in the world since the time of the dinosaurs. Pen, fun, pavilion www. biquge。 There are many types of sharks, from great white sharks that love to swallow everything to whale sharks that only love to eat plankton. But what kind of shark is this guy in front of him with a bloody mouth and a few rows of teeth inside? Neither of the two divers in front of him dared to move.

Lin Chuanqing took a closer look, the body of this shark is dark blue, the abdomen is pure white, the contrast is stark, the body is slender, the snout is pointed, and the pectoral fin is slender. If you are not mistaken, it should be a common blue shark in the ocean, look at this frighteningly large shark head, at least about three meters long. He knows that the shark has no swim bladder, and its specific gravity is slightly larger than that of water, and the ups and downs in the water are all achieved by swimming in the body, and he doesn't know why the shark will find this wreck as a nest, but if the shark uses this wreck as a nest, then salvaging this wreck will inevitably become a big problem.

The shark rested its head on the hole in the waterline and sniffed, rolled its eyes, and then swam out again. This guy searches for prey by the slight vibrations of fish stirring up the seawater, and is extremely sensitive to electromagnetic waves. In the old time and space, Google laid quite a lot of submarine fiber optic cables on the bottom of the sea in order to process massive data, but because it needed to be connected to high-voltage current to ensure normal data transmission, the electromagnetic fields emitted by these fiber optic cables made sharks mistake them for dying fish and attacked, which only improved after Google began to cover fiber optic cables with aramid fibers. Therefore, it is not the colorful sea fish that wakes up this big guy, it should be the electromagnetic waves and flashes emitted by Li Yuan when he takes pictures.

At this time, Li Yuan was almost about to pee his pants, wasn't there shark repellent sprinkled outside? Why is there a shark in the middle of this range? Although he has been learning to dive for many years, during which he has also learned a lot of knowledge about how to avoid sharks at the bottom of the sea, but Spielberg's "Jaws" left a shadow on his heart is too strong.

What to do? The two stared blankly at the shark, whose eyesight was terrible, and who relied on electromagnetic waves and the smell of blood in the water or the subtle fluctuations of the churned currents to find food. Although the shark is visiting, as long as the two of them don't move, there is basically no problem.

At this moment, Li Yuan saw Lin Chuanqing make a gesture by himself, and after a closer look, it turned out that he was saying that there was something on his mobile phone. He gently picked up the phone and looked at it, it turned out that the person above was asking what was going on, and was about to type back, when he saw the shark suddenly shake its head and swim out of the hole.

"Holy!" The patriarch in charge of the support on the boat was the first to jump, "Shark! Even the crowd more than 100 meters away from the shore could hear the exclamations, and in the distance, there was chaos on the dinghy that had just finished spreading shark repellent agents. They had dumped all the shark repellent they had brought out, and now even if they rushed over, there was nothing left to spill. Right now, people on the surface of the water can clearly see divers at a depth of more than ten meters, and a shark is swimming around leisurely with the help of strong sunlight.

Liu Yeqiang was also really startled, he just received the picture that there was a fish in the corner of the hole, but there was a strange thing in the hole under the fish, which at first glance felt like a shark's kiss. After two minutes, he didn't see a new message coming, he didn't know what was going on, so he sent a message, who knew that as soon as it was sent, there was an exclamation from a shark outside.

As a science tyrant, he knows a certain amount about sharks even if he hasn't eaten shark fin, and he knows that he must not send any messages to people under the sea now. Hurriedly picked up the phone and dialed Li Zhe's number, asking him to cut off the wireless data transmission and telephone dial-in function of the underwater personnel, and specially told him not to cut off the signal directly, otherwise the mobile phone would faithfully send a wireless signal outward to search for the base station.

Now people underwater are no longer in danger because of problems with their mobile phones, but how do you get this shark away? What they are now spilling in the harbor is a military Type 86 shark repellent that they had previously purchased from other sources, made from a chemical extracted from dead sharks that warns other sharks of danger and flees if they smell it. But the senators of the Senate all knew what it was, and they didn't understand what the chemical composition was and how to make it, and even if they knew, it would be too late to make it at this time.

Liu Yeqiang was stunned, and his mind spun quickly, the shark is not a mammal, it takes a long time to eat and digest underwater, and it breathes with gills...... Can you sprinkle something to make the shark feel disgusted and leave?

Suddenly, he remembered what he had read in the "Safety Measures for Chemical Experiments", "If a non-nervous poison is ingested by mistake, take copper sulfate and press down the base of the tongue to induce vomiting." "Copper sulphate is an emetic agent, and the two patriarchs below breathe with compressed air and have little contact with seawater, unlike sharks, which do so both by breathing and searching for prey.

Thinking of this, Liu Yeqiang hurriedly wrote an application for the extraction of chemical agents, and asked people to take it to the executive committee building to apply for approval, and he stepped on the bicycle brought by the old time and space to rush to the chemical warehouse.

Liu Yeqiang, who rushed to the warehouse, took a five-kilogram bag of copper sulfate without saying a word and ran out, but was stopped by He Shasha in a blink of an eye, "This thing was brought by the old time and space, you can't just take it away!" ”

He Shasha is a warehouse keeper who is quite reasonable, and it has always been an obstacle for these veterans who often take things directly from the warehouse without submitting for approval, "Has the executive committee approved it?" At least the chemical department has to approve it, otherwise I can't let you take it. ”

"My Grandma He!" Liu Yeqiang was about to die, it took him more than two minutes to ride here, and the diver's time underwater was less than three minutes at most. "This is to save people!"

He Shasha almost jumped up, "How can you take so much to save people?" Even if you eat something poisonous, you can expel vomiting with just a little bit, and you plan to eat five kilograms as food? No way! As he spoke, he was about to snatch the bag in Liu Yeqiang's hand.

Where would Liu Yeqiang let her snatch it, he hurriedly flashed past her sideways, jumped to the door in a few steps, thought about it, and quickly turned to He Shasha, who was still losing his temper behind him, and explained, "There are sharks in the sea, and if you want to use this to disperse the sharks, the application has been submitted to the Executive Committee, and the approval will be sent immediately." I'm sorry! He didn't have time to see He Shasha's reaction, so without saying a word, he threw the bag on the luggage rack, and ran away with one hand on the bike. Where did the naturalized guards on the side dare to stop them, they hurriedly flashed to the side to get out of the way.

By the time he rode his bicycle like a dog almost sticking out his tongue to the beach, the crowd of onlookers had dispersed for the most part, and two divers were sitting in the dinghy on the sea in the distance, taking off their wetsuits and handing compressed gas cylinders to the people around them.

"How did you get out?" Liu Yeqiang rushed all the way to the trestle, and was the first to pull Lin Chuanqing up, and asked while stretching out his hand to pull Li Yuan.

"I'll go ......" Li Yuan still stuttered a little, "That...... The shark...... The ...... of the shark walking away on its own"

"It's okay," Lin Chuanqing patted Li Yuan on the back, relieved his nervousness, turned his head and said to Liu Yeqiang: "That's the case, it should be because the wind and waves are relatively small today, and the peripheral shark repellent agent has not had time to act on us and we have gone into the water." The shark came out and walked around us a few times, probably smelling shark repellent, so it ran away. ”

"I ...... I...... I'm almost ...... I'm scared to death......" Li Yuan patted lightly on his chest as he tried to speak as clearly as possible.

"Don't laugh at him," Lin Chuanqing obviously saw Liu Yeqiang's expression of wanting to laugh, and hurriedly stopped, "The shark circled around him twice just now, and sniffed directly on him before leaving, if it rests on the ground, it will be no different from being sniffed by a lion and tiger, and it is normal to be afraid." As he spoke, he patted Li Yuan on the shoulder to show encouragement.

Li Yuan nodded, took a few deep breaths, and then hurriedly walked along the trestle to the shore.

"Are there sharks down there?" Liu Yeqiang is more worried about this. "You know, you'll have to go down and find out what's going on with the keel, and if there's a shark, you'll be in trouble."

"I don't think there should be any sharks, but don't go down today, this shark repellent is about three hours, and the compressed air cylinder has to be inflated, and when it is filled, it basically has to be sprinkled again."

"By the way, I got some copper sulfate over there, and this thing can also repel sharks." Liu Yeqiang pointed to the bicycle parked in the distance.

Lin Chuanqing was a little displeased, "You didn't let me go down today, did you?" These few minutes made me feel like I had exhausted my physical strength and ran out of energy. ”

"No, no," Liu Yeqiang hurriedly waved his hand to show that he was misunderstood, "I mean I got some copper sulfate here, you can take it to the water when the time comes, in case you touch the sharks, they will definitely not come close." ”

"Oh, that's good." Lin Chuanqing nodded, "If you can bring something like this into the water today, you won't have so much trouble." ”

After speaking, he shook hands with Liu Yeqiang, and hurriedly chased after Li Yuan, who was still hobbling away. Liu Yeqiang smiled, he really didn't expect to encounter sharks in this flaw detection today. "Next time, if there is such a problem, I'm afraid it's better to get a diving bell. But now that there are no welding rods, what should I do? ”