In myths and legends, 30% of mermaids are natural gods and personality gods, and the remaining 70% are mammals called dugong. But Baidu knows that this creature has nothing to do with mermaids, which is purely an ancient fantasy. The origin of its legend has not been verified so far, but many ancient books have recorded this creature, which puzzles modern scholars.
First of all, mermaid is not a fish, but an animal between amphibians and mammals, and its reproduction mode is between oviposition and viviparous. Secondly, it has high intelligence, but it may not have a complete language system. In other words, this creature should live in groups like dolphins, but it has no social concept.
Skeletons of suspected mermaids have been found in history, and there are three most famous cases, among which the mermaid fossils in Yugoslavia and the Caribbean are the most famous. But so far, there is no complete research report in academic circles. If it is not because some secrets are covered up by relevant institutions, it may be false. But in any case, a real mermaid must be very different from human form. They live in the deep sea, so their skin must not be as delicate as humans. It may be caused by years of darkness, low temperature and high pressure, or high density fish scales. Preserving the habits of fish tails and some fish, the pelvis will show a strange streamline to adapt to the low temperature. Don't say soft blond hair, it may not even be as good as a broken hemp rope. I think it is more likely that there is no hair.
Although it is all my speculation, if mermaids really exist, it may be a race that has deviated in the process of evolution. They have nothing to do with human beings. They are neither longer than wisdom nor have physical defects, so they are easily eliminated in natural competition. If it really exists, it must be gregarious. We can guess that mermaids live in a deep-sea environment with plenty of food, darkness and cold, and lack of natural enemies. They are losing their seemingly human characteristics.
The second idea should be more exotic. Mermaids are actually a race formed by human atavism. According to classical evolutionism, animal embryos will show the characteristics of primitive fish for a short time before larval development. But this phenomenon has not been observed by anyone except the discoverer. Genes that are naturally eliminated do not mean that they disappear completely. It is likely that a "lock" has been added to make them unable to express.
The third idea is my novelist friend's guess. He believes that mermaids are not losers in evolution, but choose different directions from human beings in evolution, and show similar characteristics to human beings at the end of evolution. They have the same or higher wisdom as human beings and even created a highly developed civilization. This can explain why they have appeared repeatedly in human history, but have not been discovered so far. After the high development of human industrial civilization, this part of the population moved away from human beings and began to live alone.
There are also a few conspirators who think mermaids are aliens. Of course, I personally disagree with this statement.
Either way, it can't be explained by modern science. I'm sorry I can't give you an accurate answer, but I'm also fascinated by this fantasy. Away from the mythical era, we are doomed to lose some fate with magical creatures. Even if they once existed, they must disappear now. This is also the sorrow of human development.
I answered this question once, so I copied and pasted it directly. No wonder. )