On Earth, as humans have changed ecosystems, more and more "ancient" creatures have completely disappeared, of course, some biological populations have also disappeared after a mass extinction on Earth, and only a few have survived, because they are difficult to withstand the great changes in the ecosystem at that time.
So nowadays we can see very old creatures that are basically unlikely. With the passage of time, some biological populations are gradually moving away from the human life circle, so the possibility of being discovered by humans is also low, but this does not mean that there is none.
And in May, scientists found a very old creature, and also in 1938 was considered extinct, there are 83 years, the creature belongs to the dinosaur era of species, so now can find this kind of creature, is rare, really not easy, let's take a look at the situation.
<h1 class="pgc-h-arrow-right" data-track="11" > fishermen caught coelacanths declared extinct for 83 years</h1>
According to scientific reports, it was Malagasy fishermen who accidentally discovered this "four-legged fossil fish" coelacanth when they caught sharks in the western Indian Ocean off the coast of the country, which is very ancient and dates back to 420 million years ago, that is, 420 million years ago.
Named for its hollow fins, the fish has a very special appearance and a very ugly appearance, but the fish is not a very gentle species, but a fierce predator.
It is thick and mucous, with limb-like fins, flexible movements, bright colors, and easy to distinguish, so it is very easy to identify with ordinary species. In the past, everyone's research on this fish is mainly based on fossils, so today's discovery is also a miracle, and this is also the oldest fish in the world to survive today, belonging to an ancient fish of the dinosaur era, so the coelacanth is also known as the "living fossil of the dinosaur era", of course, it also has some aliases "Lans Maria, speartail, empty echino, Ratimai" and so on.
The fish mainly lives in a fish colony area of about 328 to 429 feet underwater, and this time the fishermen caught it from this area. Coelacanth is a carnivorous fish that can live up to 60 years, grow to 6.5 feet tall, and weigh about 198 pounds, which is its basic condition. Of course, after the capture, if not released quickly, the fish is easy to die, once they leave the waters where they live, basically can only survive for about two hours, so in the end how the fish is finally handled, there is no explanation for the time being.
<h1 class="pgc-h-arrow-right" Data-track="11" What does the emergence of extinct species mean > and why? </h1>
In fact, in recent years, many species declared extinct have appeared frequently, which has aroused many people's hot discussions, such as: Rhododendron adenosum found in Sichuan that has disappeared for nearly 90 years suddenly appeared, it is also a plant that scientists believe to have long been extinct, and there are white-throated buzzard species that were considered extinct 136,000 years ago to reappear on the earth, etc., which shows that many species may not be extinct, so what is the reason and what does it mean?
In general, species that have disappeared for a long time, have not been discovered for a long time, will declare extinction, but the reason may be because the species is far away from the living area of humans, coupled with the destruction of their habitats by humans, hunting, etc., resulting in the reduction of the entire population of species, so it is difficult for us to find, for a long time, we think it is extinct, so we have never seen it again. And now we can find that the emergence of these scarce animals and plants may be that they have migrated with the change of ecosystems, so we have found them.
This means that these organisms "respond" to changes in the environment and the ecosystem becomes better. So extinct species appear, either before humans, or even decades have not been discovered, the environment has changed and returned. There are also some special ways of evolution, such as the white-throated buzzard species that were considered extinct 136,000 years ago, that is, there is "repeated evolution", which is the general situation, so there are two possibilities for the emergence of extinct organisms, the first is that it has not been discovered between them, and there is also a special way of "repeated evolution".
<h1 class="pgc-h-arrow-right" data-track="11" > summary</h1>
With the evolution of the ecosystem, more and more biological populations appear in front of us, and many are scarce biological populations, we do not say far, since 2021, we have also seen the achievements of China's environmental protection in recent years, for example: Guizhou found that the disappeared 20 years of China's endemic plant Funing vine, five-clawed golden dragon appeared in Yunnan, the wild population of giant pandas has increased to 1864, the total number of crested ibises in the wild and artificial breeding populations exceeded 5000, etc., which shows that China's ecological environment has become better.
Of course, it is impossible to deny that China's environment has indeed become much better, and in 2021, the data released by China has reached 23.04%, the forest stock has exceeded 17.5 billion cubic meters, and the comprehensive vegetation coverage of grasslands has reached 56%. Compared with 2015, China's forest coverage rate is only 21.66%, so the speed of improvement is very fast, which also shows that the environment is better and the same appearance of organisms is "corresponding", so only if the environment is good, there will be better biological habitats, and more biological populations.
No matter what the reason for the discovery of the "coelacanth" that has been declared extinct for 83 years is, no matter how it is said, the ecological environment is the foundation of biological survival, so protecting the environment is ultimately important.