Author - ZG does not eat tides
In the south of Eastern Siberia, Lake Baikal hangs quietly on the map like a crescent moon, this beautiful large lake is the "Northern Hell" that can accommodate the carp in "The Getaway", and the pearl of Siberia with blue light in the vast snow. It is the world's largest deep lake and the largest freshwater lake on Eurasia. Although located in the cold inland at higher latitudes, there are many large and long-established populations in the middle of the lake.
Of course, these also include the more famous Baikal seals, conchs, and "sharks". The existence of these species in Lake Baikal has become an unsolved mystery in the world: how can seals and sharks live in freshwater lakes?
Scientists Villeshakin had speculated, based on paleontological and geological materials, that during the distant Mesozoic Jurassic period, there was a vast Transbaikal Sea east of Lake Baikal, which was later separated from the ocean due to crustal movement, leaving inland saltwater lakes. Later, it becomes a freshwater lake through precipitation and river replenishment. Creatures that had previously lived in the region were left here and gradually evolved into new species adapted to fresh water. But in the early 1990s, core samples from drilling were not left over from the Mesozoic Era, and there are some materials that prove that the Baikal region has long been land, thus rejecting this claim.
Du father fish
The so-called Baikal shark is actually a freshwater fish called Dubu, and the conch and sponge are only freshwater species with the word "sea" in their names. But Baikal seals do come from the Arctic Ocean.
Baikal seals
The Baikal seal is the smallest seal in the world and the only freshwater seal in the world. They are agile and eat 3 to 4 kilograms of fish a day to replenish their energy. They also often lie in groups on the cobblestone ground in the heart of the lake in winter.
The closest blood to baikal seals is the ringed seal of the Arctic Ocean. Scientists believe that the seals went up the Yenisei River in pursuit of their prey and came to Lake Baikal. At the end of the ice age, the riverbed cannot be returned to the sea after it is raised. Most seals that live in rivers have not survived environmental changes. And the lucky ones in the lake have successfully settled here through natural selection. It also formed a reproductive isolation with the ringed seal to form a new species, the Baikal seal.
(Canadians "limit growth" to seal populations.)
They have two predators: brown bears and humans, and their targets are both seals with thick fat and flesh. Some humans also covet their fur, so that these beings cannot escape the fate of being hunted and killed in large numbers. Not only are natural enemies, but warming and pollution are also constantly threatening their survival. I hope that when we look at these beings who have survived the struggle against nature, we will not be a robber of life with a gun, but protect them, like the sea and lakes nourish and guard us.