My Deep-sea Fishery

After flying out of the water, the flying fish needs to immediately open its long and wide pectoral fins and glide at a speed of about fifteen meters per second against the sea breeze.

If the wind is right, the flying fish can fly more than 400 meters in the low altitude four or five meters above the water.

When the flying fish returns to the water, if it needs to take off again, it will beat the waves with its tail before the whole body is in the water to increase the power of glide, make it jump out of the water again, and continue to glide for a short time.

Obviously, during the entire flying process of the flying fish, the wings did not flap at all, but only relied on the propelling force of the tail to glide in the air for a short time.

A scientist once did an experiment, cutting off the tail fin of a flying fish, leaving its long pectoral fin, and putting it back into the sea. Because flying fish does not have the developed pectoral muscles of birds and cannot flap their wings, the flying fish whose tail fin is cut off Can't rise into the air anymore.

"Speaking of which, the wings of flying fish may have degenerated over the long years. In the earliest period, flying fish can actually fly." Xiang Yang said suddenly.

"Why do you say this suddenly?" Chen Qingsheng asked in confusion.

Xiang Yang pointed to the front and said, "Look at that."

Chen Qingsheng took out his binoculars and looked at it carefully for a while, then turned his head in surprise, "Is that a flying fish?"

"Yes, it's a flying fish."

Xiang Yang recalled carefully for a while, and then said: "A researcher in our country has discovered a flying fish fossil in Guizhou. It dates back to about 240 million years ago and is the oldest known flying fish fossil to date."

"The fossil can fly?" Fang Youqun asked.

Xiang Yang shook his head. "The kind of flying fish fossil discovered in Guizhou Province by researchers from the Academy of Sciences and other institutions has a physiological structure very similar to today’s flying fish. It also has broad pectoral fins on both sides of the chest as the main wings, and there is also a pair of relatively large wings on the abdomen. The small fins can be used as auxiliary wings during taxiing."

Xiang Yang said that the ancient flying fish can fly because the tail fins of the flying fish fossils found are asymmetrical.

The two tail fins of today's flying fish are about the same size and are symmetrically distributed, but the two tail fins of the flying fish are asymmetrical, and the lower one is much larger, which helps them get more thrust when they jump out of the water.

The dating results of these flying fish fossils show that they lived about 240 million years ago, in the middle of the Triassic.

The oldest flying fish fossils previously discovered were about 200 million years ago, belonging to the late Triassic period, and were discovered in Italy and Austria.

Therefore, these fossils found in my country are the oldest flying fish fossils known so far.

Some researchers have said that the ancient flying fish can reach 20 centimeters in length. After jumping out of the water, they can glide dozens of meters farther in the air than today's flying fish.

This discovery is of great significance to the study of ancient ecosystem changes.

Because about 250 million years ago, at the end of the Permian Period and the beginning of the Triassic Period, the earth experienced a severe biological extinction. At that time, more than 90% of marine life had died.

But this kind of flying fish soon appeared, indicating that the ocean was already rich in species at that time, and the ecosystem may recover from this mass extinction faster than previously thought.

"Nature is really amazing, fish can fly." Fang Youqun stared at the group of flying fish through binoculars, exclaimed.

Xiang Yang smiled and said: "Fishes swim in the water, and birds fly in the sky. For many people, this is indeed a common criterion for animal living areas, but just like birds that have flightless birds, fish Naturally, there are challengers who bravely jumped out of the water and soared in the sky."

"Which kind of flying fish is this? I don't seem to have seen this kind of flying fish before." Chen Qingsheng asked Xiang Yang.

Xiang Yang shook his head, "The distance is too far, I can't see clearly."

Although it can be called flying fish as long as it is a flying fish, the flying fish we usually refer to refers to the members of the flying fish family.

But in fact, there are a total of nine genera under this flying fish family, and there are as many as dozens of effective species. In the coastal areas of our country, there are many different species such as ago flying fish, single-whisker flying fish, and soaring flying fish. Kind of flying fish.

As for the entire flying fish family, all oceans all over the world can be regarded as a big fish race.

Flying fish is different from the fierce marine predators that Xiang Yang encountered before.

Small flying fish mainly feed on zooplankton, and the water layer they inhabit is mainly surface waters.

As the so-called big fish eat small fish, it is smaller than the small flying fish that eats shrimps. It can be said that it is the prey of all marine predators including tuna, sailfish, dolphins, and even squids and seabirds.

With such powerful enemies, flying fish can evolve their flying skills. In fact, it is also a portrayal of the survival of the fittest. The flying skills can help flying fish to escape quickly from their natural enemies.

As for the specific flying ability of flying fish, different types of flying fish have different performances under different circumstances.

The record of flying fish with the longest known time in the air is the 45 seconds recorded by a film crew of a TV station in Dongyi in 2008.

In terms of flying distance, under normal circumstances, the average flying distance of a flying fish is mainly one hundred meters, but under extreme conditions with the help of wind or waves, there are also flying fish that successfully fly a distance of four hundred meters.

As for the flying height of flying fish, although many people have the impression that flying fish fly close to the surface of the water, there are actually many types of flying fish that can fly at a height of six meters above the sea surface for gliding.

By means of flying, although flying fish is one of the bottom organisms in the entire marine food chain~www.readwn.com~, all members of the flying fish family basically do not have a survival crisis.

After hearing this, Fang Youqun said with emotion: "It turns out that fish do not only fly in fairy tales. There are actually flying fish in the sea."

"It's not just a fairy tale, and it's cruel. In the real world, flying fish is just a means of escape after being forced into desperation." Xiang Yang shook his head.

Said this, Xiang Yang suddenly laughed, "In fact, the first time I knew Feiyu was in a science fiction comic."

When Xiang Yang was a child, he once saw a story in the comic "Doraemon" that the husband feeds the koi at home and laughed at Daxiong unsparingly: "Your home is so small and you don't even have a pond. Can't raise koi?"

Nobita returned home, hugging Doraemon and crying.

As soon as Doraemon had an idea and there was no pond, he would raise the fish in the air, so he took out a bag of fish food from his pocket and sprinkled it into the sea. A magical scene happened. The fish in the sea jumped up like As a bird rushes to the sky...