Li Suyun saw these cute Magellanic Sea penguins, couldn't help but squat down and picked up one of the little penguins, and then she held this little penguin in her arms, stood up and observed carefully for a while, she found that the penguin's head is almost the same as the head of most birds, especially the penguin's eyes and his beak, if you don't look at the penguin's lower body, just look at the head, like a big bird. Li Suyun couldn't help but ask Jiang Jianlong again: "Actually, we all know that a penguin actually had wings a long time ago, it was like a cormorant, it could fly, walk on land, and dive into the water, but why did it slowly evolve and turn its wings into useless people, this is not in line with the law of evolution, natural selection, survival of the fittest, it is not better to have a pair of wings that can fly, this can make him survive better?" ”

Jiang Jianlong said: "When I was reading a book before, I saw such a statement, saying that 200 million years ago, the ancient Gondwana continent formed by the combination of several continents on the earth began to split and disintegrate, and the Antarctic continent separated from it and began to drift southward. At this time, a flock of birds happened to be flying over the ocean, and they found that the drifting Antarctic continent was a living paradise, so they landed on this land. At first they lived happily, but the good times were short-lived, and as the continent moved south, the climate became colder and farther away from the warmer continents, and it was impossible for the birds to fly away from the place. Soon the Antarctic continent drifted to a polar position and was finally covered with a thick layer of snow and ice. It turned out that a wide variety of creatures died en masse, but only the ancestors of penguins survived. But they have nothing to eat on the snowy land, so they have to go down to the ocean in search of food. As a result, its wings gradually degenerate from being able to fly to not being able to fly. You say that penguins can't fly, it is against the basic law of evolution, in fact, this is not accurate, Darwin's theory of evolution says that natural selection of the fittest survives, in fact, penguins choose to swim, and no longer fly, in fact, there is a reason, some scientists have pointed out that the reason why penguins can't fly is that the energy consumption of diving is much lower than the optimal choice made by flying. For example, the sea dovetail, which lives in the Pacific Ocean and the northern part of the Atlantic, is a seabird very similar to a penguin, but the difference is that it still retains the ability to fly. According to scientific research, the energy expenditure of sea dovetails during movement can be monitored through an isotopic technique called double-labeled water. After testing the energy expenditure of sea dovetails in both flight and diving, it was found that the energy required for diving was much lower than that of other birds. From a biomechanical point of view, this low-energy diving behavior and high-energy flight behavior will make sea dovetails have the possibility of losing their ability to fly in evolution. This also shows that the penguin's ability to fly may also be caused by the same cause. ”

After listening to Jiang Jianlong's explanation, Li Suyun said: "No wonder, because they live on isolated Antarctic islands, penguins do not need to spend great flight energy, so they gradually lose their ability to fly in the process of evolution. This situation is also similar to that of chickens, ducks, and geese, which are raised by humans and do not need to forage everywhere and gradually lose the ability to fly. ”

Jiang Jianlong said: "Yes, many times it is very similar to us human beings, sometimes we will do something, we obviously know, and proficient, but because of some external reasons, all of a sudden we will not do this thing, a long time later, when we remember this matter, because we have not done it for a long time, we no longer know." ”

Li Suyun said with a smile on the side: "It's really true, I used to be a teacher, since I have been doing business outside for a few years, if you let me be a teacher now, I will definitely be a lot unfamiliar, I don't know how to teach." ”

Just when Jiang Jianlong and Li Suyun were talking, the little penguin that Li Suyun was holding suddenly bit Li Suyun's finger, Li Suyun was so painful that she immediately threw the little penguin on the ground, and after she checked her finger, she found that the finger was already red and swollen, but fortunately there was no bleeding and breaking the skin.

Jiang Jianlong asked eagerly, "Are you okay?" ”

Li Suyun said with an uncomfortable expression on his face: "It's okay, but it does hurt a little." ”

Jiang Jianlong said: "Fortunately, it is a little penguin, but if it is a big penguin, the consequences are unimaginable." ”

At this moment, more and more penguins came around the two of them, and Jiang Jianlong found that there were also a few penguins standing on the boat not far from them, Jiang Jianlong was afraid that these penguins would enter their cabin to make trouble, so he immediately helped Li Suyun to walk in the direction of the broken ship. But at this time there were too many penguins around them, black and pressing, like a black carpet on the beach, originally only three or four hundred meters away, but because there were penguins blocking their way, they could not move an inch, they drove the penguins while moving their steps, and walked for a full five or six minutes before they came to the broken boat where they had been living. When they entered the cabin, they found that three penguins had entered the cabin through the half-open hatch. One of the penguins was still barking at each other with the cormorant they had caught, but fortunately the diesel lamp in the cabin was not damaged by the penguin, and the wick of the diesel lamp was still flashing.

After Jiang Jianlong entered the cabin, he drove all three penguins out, and then he closed the hatch tightly to prevent the penguins from entering again.

Li Suyun said at this time: "When I first came to this desert island, I found that there was nothing on this desert island, and I felt very lonely, but now there are so many penguins suddenly pouring in, and I feel too noisy, and I really don't fit in at once." ”

At this time, Li Suyun found that Jiang Jianlong had been secretly sneering since he entered the cabin. She couldn't help but ask Jiang Jianlong: "After I got to the cabin, I saw that you were laughing all the time, we are all in this situation, you can still laugh." ”

Jiang Jianlong restrained the smile on his face, then was silent for a while, and then said to Li Suyun: "Are you hungry?" ”

Li Suyun said angrily: "Of course I'm hungry, I've been hungry since I went to this island." ”

After Li Suyun finished speaking, she suddenly understood what Jiang Jianlong meant, she looked at Jiang Jianlong with a surprised expression on her face, and then said to Jiang Jianlong: "Do you want to eat penguin meat." ”

Jiang Jianlong said with a smile: "We caught an Antarctic snow pigeon, we didn't eat it, but released it, hoping that it would leave the island and deliver our distress letter, but he didn't send our letter out, but returned to the island." This shows that our cry for help is hopeless, we are destined to stay on this island, God has made us desperate but has brought us hope, this group of penguins is our hope, it is the food that God has given us. ”