Slogan to protect baiji dolphin

Baiji dolphin has existed for more than 10 million years, and it is a very old species. Really? Giant panda in the water? Extremely rare to be called. Living fossil? , has very important scientific research value.

However, with the destruction of habitat and overfishing, it is becoming more and more difficult for baiji to survive. In addition, their low reproduction rate, small number base and low genetic diversity accelerate the risk of extinction. Now the baiji dolphin is listed as? Extremely dangerous species, facing an extremely serious situation, was once declared as? Functional extinction? .

The baiji dolphin is a small freshwater whale unique to China, mainly living in the middle and lower reaches of the Yangtze River and its adjacent waters. According to research, baiji may have appeared 40 million years ago. They were originally land animals, but due to environmental changes, they returned to the water to survive.

The baiji dolphin is not all white, but it is named because it is much lighter than the finless porpoise. Adult baiji has a blue-gray back and a white abdomen.

The existing baiji dolphin is not much different from the original baiji dolphin, and most of the ancestors' forms have been preserved. It may be that the competition is not so fierce and the environmental changes are small, which leads to their slow evolution. From them, we can see some traces of ancient times, and the opportunity is very rare.

But baiji is very rare. In 2002, it was said that there were less than 50 baiji. In 2007, it was announced as? Functional extinction? , refers to the species in the natural state lost the ability to reproduce, can't continue to survive.

20 18 A suspected baiji was found on the river and photographed. Although it is impossible to determine whether it is a baiji, it also gives hope to the protectors of baiji. In June of the same year, 5438+065438+ 10, the IUCN Red List of Endangered Species was updated and released, and the baiji dolphin was not declared extinct in the wild. This is also good news, there is still a chance.

But everyone knows that the possibility of survival of baiji is almost zero. I just have a little fantasy in my mind. Moreover, not only baiji, but also too many species are accelerating towards extinction under the interference of human beings. I don't know when this extinct sickle will hang around human neck.