In terms of common sense, fish can not be separated from the water, once they leave the water, they will die, but the world, there is no wonder, in nature, there is really such a fish, it is not comfortable with the status quo of the living environment, it can really leave the water to survive, and the survival time is still measured in years, it is the strongest animal in Africa - African lungfish.
Africa, accounting for 20.4% of the world's total land area, is the second largest continent in the world, but also the second largest continent in population, one of the birthplaces of the world's ancient humans and ancient civilizations, and is known as a "tropical continent". It is in such a country with high temperatures and little rain throughout the year that such magical aquatic animals have appeared.
<h1 class="pgc-h-center-line" data-track="19" > Africa's "fish strong"! </h1>
Lungfish are a general term for the fish of the suborder Lungfish of the suborder Meat finfish, which are distributed in the freshwater of Africa, Australia and South America. Lungfish have a long lifespan, and can normally live for about 100 years. It is also one of the oldest vertebrates still alive on Earth, having existed on Earth for more than 400 million years and is a veritable "living fossil".
<h1 class="pgc-h-center-line" data-track="16" > survive! </h1>
"Natural selection, survival of the fittest". The African lungfish can survive for 400 million years, and it must have its own superiority.
Like other fish, lungfish living in freshwater can also use gills to extract oxygen from the water, in addition to which lungfish have a second type of respiratory system: the swim bladder replaces lung breathing, and their swim bladder is well developed and structured very similar to the lungs of land animals.
With this unique respiratory system, once it comes to the summer drought season, the "lungs" of lungfish play an irreplaceable role. Lungfish, unable to find water, hide themselves in the mud and make a breathing hole in front of their mouths. In this way, their bodies remain moist and continue to survive in the mud. When the rainy season comes, the mud of the lungfish is washed away, and they can return to the place where there is water and continue to live. This behavioral process of lungfish is also called "summer sleep" by humans.
According to records, the lungfish in the process of "summer sleep" maintain a "suspended animation" state of not eating, drinking or excreting for months or even years. The study found that this is a kind of cell-level sleep, and scientists use this as a breakthrough to hope that humans can also sleep in the future, so that they can travel ultra-long distances in space or buy time for medical rescue.
<h1 class="pgc-h-center-line" data-track="17" > the current situation of African lungfish</h1>
It is said that everything in nature is compatible with each other, but in fact, there are not many natural enemies of marine life in the environment where African lungfish live, and their real natural enemies are humans. Although Africa is rich in mineral resources, but because of its climatic reasons, food and water sources have been relatively scarce, in the summer dry period, in order to improve food, people have targeted the lungfish that "sleep in the mud" in the mud cave.
The dry season comes, the riverbed is dry, coupled with the fact that the lungfish "summer sleep" will not run and the cave entrance will leave a small hole, often unconsciously caught, in Africa, digging lungfish and digging potatoes is as simple as it is, and every summer the fire grilled lungfish has become a "seasonal dish".
<h1 class="pgc-h-center-line" data-track="22" > summary</h1>
African lungfish should not have dreamed that they survived hundreds of millions of years of natural destruction, but they could not resist human predation, and the number of wild lungfish has been decreasing, and it is not certain that one day it will face the risk of extinction. Protecting wildlife is still on the way!
Then again, the experience of the African lungfish also shows the tenacity of natural creatures in order to survive from the side, a fish is like this, what reason do we have not to work hard, do not cherish the current life!