Taoyuan little fisherman

Chapter 215 Spiral Shark

The huge power brought Wang Tianhui not only physical refreshment, but also an inexplicable sense of superiority psychologically.

He felt that if Xiang Yu stood in front of him now, he would definitely blow him away with one punch.

He felt like the Hulk after transforming, and he wanted to let out a roar, but it seemed too second-guess to do so.

Although there is no one around him, only a silly and sweet Dabai, rationality forces Wang Tianhui to choose to be a rational and qualified person.

Without further ado, let's try the current strength.

Wang Tianhui grabbed a holed steel plate with one hand, then muffled force, and then tore the steel plate as hard as leather with both hands.

Although it is not that easy, it is enough to tear it apart.

After Wang Tianhui's hard work, the gap was finally enlarged to the extent that Dabai could get in.

"Come out!"

Wang Tianhui yelled, and then from the darkness of the cabin, a ten-meter-long big shark came out of the hole.

Wang Tianhui didn't expect this shark to be so big.

There are many species of sharks, and there are about 500 species recorded alone, 80% of which are no more than 1.6 meters long. Even the notorious great white shark is only 6 meters long, which is about the same length as the great white.

Even the smallest pygmy dogfish is only 20 centimeters long.

The only existing shark that can reach more than ten meters is the whale shark.

Whale sharks are the largest fish in the world. There is only one family, one genus and one species. The whole body is gray-black, with light spots and criss-crossing light-colored bands, like a chessboard. It looks different from other sharks.

But this guy in front of him was skinny, and his body color was no different from other sharks.

This makes Wang Tianhui, a biology major, difficult to come by. What kind of product is this?Is it a genetic mutation?

The shark, finally freed, had a good time jumping up and down in the abyss as soon as he swam out.

When it was finished, it slowly swam towards Wang Tianhui.

After seeing this guy's head, Wang Tianhui's mouth became O-shaped in shock, and even Dabai's mouth opened wide.

Wang Tianhui never expected that this guy looks so monstrous.

Its head looks normal except for the damage from the bump, but its mouth looks incomprehensible.

Its lower jaw is in the shape of a chainsaw, with sharp teeth growing on the edge of a disc, and the upper jaw is so deep that it can directly wrap the chainsaw's jaw. When it shuts its mouth, nothing abnormal can be seen. People want to laugh.

etc!Those teeth look familiar!

Think of those spiral teeth that I picked up in the shell pile before, isn't this the shape?
Sharks are not only known for their ferocity, they also have a magical ability, which is to change their teeth.

Sharks can change countless teeth in their lifetime. Sharks will continue to age, but their teeth will always be new. This is a feature that humans are extremely envious of.

It's just that sharks change their teeth differently from humans.

The dental plate of human teeth is fixed in a very early period, even if the deciduous teeth are replaced by permanent teeth, the process is just to replace the old teeth with new teeth from the same dental plate.

But sharks are different. Although they have the same tooth plate, sharks often move the tooth plate continuously, and slowly push the spare teeth in the back row forward.

It is equivalent to a gear or a conveyor belt, which is constantly moving to generate new teeth from the rear, which can be said to be quite awesome.

Sharks can grow up to 30000 teeth in their lifetime.

Other sharks have upper and lower rows of teeth, and even several rows of upper and lower rows of inner and outer layers.

But this product is like a small game called Zuma, rotating from the inside out to push the new teeth out to replace the old teeth that have fallen out.

At this time, a name appeared in Wang Tianhui's mind.

Spiral Shark.

He finally remembered why looking at these teeth looked familiar.

When I was in college, my teacher taught a class about sharks. In the class, he mentioned a peculiar shark called Helicopterus.

Sharks are one of the species with a long history of life on earth. They have been more than 5 million years old, even older than dinosaurs.

In the evolutionary history of the shark family, it can be said that "sharks" came out in large numbers, and the most evil one is the spiral tooth shark.

Although the spiral tooth shark was also a veritable deep-sea monster back then, the "monster" mentioned here does not refer to its explosive combat effectiveness, but its shape. Scientists have spent more than 100 years without figuring it out.

Spiral tooth shark, the English name "Helicoprion" comes from the Greek word "spiral saw", referring to its strangely shaped teeth.

They first appeared in the Permian period 2.7 million years ago, with a body length of about 10 meters and no hard outer armor, but fortunately escaped the Permian mass extinction, and were stunned in the early Triassic period. He became the overlord of the sea, because his family was dead.

However, as the biological structure changed, the spiral tooth shark gradually withdrew from the stage of history.

Unlike humans and most vertebrates, sharks and their relatives don't have a skeleton made of hard bone. Instead, their skeleton is made of cartilage, which is less dense and more flexible, like a human nose and ear.

But it doesn't usually fossilize like hard bone because it doesn't have the conditions to mineralize.

Sharks are made up of cartilage and muscle, which is much less dense than bone, but that's why they're such good swimmers and can make sharp turns.

When a shark dies, its cartilage and muscles will dissolve, its teeth will fall off, and it will be covered by sand. After tens of millions of years of changes, it will eventually become a fossil.

The tooth fossil of Helicopterus was first discovered in the 19th century. Since then, scientists have debated its shape for more than 100 years.

There is a row of teeth growing along the spiral. Scientists can't figure out what kind of form it grows in the mouth. Some people even boldly imagine whether these teeth grow outside the mouth. Like the top of the head, nose, tongue, tail or back?
Wang Tianhui also remembered that the teacher had drawn a lot of images of Helicopterus sharks on the blackboard, and made the students laugh, saying that this was the craziest shark in history.

Unexpectedly, this shark, which has troubled scientists for more than 100 years, now appears alive in front of Wang Tianhui.

Its spiral teeth actually grow on the lower jaw.

Wang Tianhui was curious about how it eats.

At this time, there was a fish swimming by the spiral tooth shark, but it chose to ignore it because it was hungry, but stared at the bottom of the sea.

At this moment, a big cat's eye whelk crawled past slowly, and the spiral tooth shark rushed over, biting the cat's eye whelk with one bite, and the powerful upper jaw and the lower jaw like a chainsaw easily cut the thick shell of the wreck into pieces. Two halves, and then the snail meat was hooked out with a single hook of the spiral teeth. The whole process did not exceed three seconds, and the speed was amazing.

(End of this chapter)