i have a small world

In parts of East Asia, South Asia, East South Asia, Africa, and South America, hunting dolphins has been a constant custom for thousands of years.

According to statistics, within 90 days after being caught, 53% of the dolphins died of depression; the average natural life span of dolphins is 45 years, but half of the caught dolphins died within two years after being caught, and their average life span is, Also only 5 years;
In an artificial environment, dolphins are extremely susceptible to diseases such as pneumonia and enteritis, and they will not survive seven years due to chlorine water poisoning and long-term depression and panic.

The crisis of dolphins is not only because of human fishing, but also because of human pollution of the marine environment.

As society develops faster and faster, some pollutants are also increasing, and human beings dump all kinds of domestic garbage, industrial waste water, and various pesticide pollution and oil field waste into oceans and rivers without thinking. This behavior has made the originally clear ocean turbid, and large-scale accidents such as oil spills have occurred from time to time, which has further deteriorated the marine environment.

In densely populated waters along rivers and rivers, eutrophication and heavy metal pollution have threatened the living environment of aquatic organisms, and the proliferation of toxic algae has also made the waters in this: ten thousand ￥ book ￥ bar ￥ 3.nsb.cm dangerous. In 1987, hundreds of dolphins died tragically on the new-ze-west coast of the United States due to immune system dysfunction caused by red tide.Shocking, but also chilling.

Hearing is the most sensitive sense of dolphins, hunting, swimming and playing.It's all about hearing.

All kinds of underwater engineering equipment and ships of various sizes that come and go day and night not only disturb the life of dolphins, but also "collisions" between dolphins and ships occur from time to time. The "noise pollution" of these human activities also makes dolphins unbearable. Impaired, out of control behavior, increased stress, abnormal life habits.

in many river basins.Building dams, repairing fishing grounds, constructing flood control projects, and extracting water resources have become commonplace behaviors.Artificially alter the living environment of dolphins.Various projects were built to block activities such as dolphin migration.

Just like the baiji dolphin, it was once a national treasure that we are proud of, but the completion of the Three Gorges Dam.It also more or less accelerated its quiet disappearance.

Human beings have over-exploited the earth.Pollution has led to changes in the ecological environment such as global warming, climate change, and sea level rise, such as precipitation, water temperature and salinity. In particular, the water temperature in some coastal areas has risen by 3 to 4 degrees Celsius in just half a century. The dolphins are overwhelmed and at a loss.In just a few short decades, the water paradise where the dolphins used to swim happily has become besieged and endangered.

It is for these reasons that, on December 1988, 12, dolphins were included in the "National Key Protected Wildlife List". National secondary protected animals.

Dolphins are still very intelligent, and their intelligence is far beyond your imagination.

Dolphins can recognize the special whistles of their relatives and friends, and can also understand human gestures; they will peel off sponges to protect their noses before foraging, and they will remove the bones before eating squid.

Some studies even show that dolphins are the smartest animals in the world.

Dolphins are very clever because they have a well-developed brain with many grooves, and the more grooves, the more developed their intelligence.The average brain weight of an adult dolphin is 1.6 kg, that of a human is about 1.5 kg, and that of an orangutan is less than 0.25 kg.

In terms of absolute weight, dolphins are the first, but in terms of the ratio of brain weight to body weight, human brain accounts for 2.1% of body weight, dolphins 1.17%, and orangutans only 0.7%.

A new study published in the British "Proceedings of the Royal Society? Biology - Science - Special Issue" revealed that the genes of dolphins and humans are surprisingly similar. They and humans and other species with larger brains have Some inherited genes that can promote the convergent evolution of individuals and produce complex cognitive abilities.

Lead researcher Miel Mgen said: "The dolphin brain is exceptionally unique and intelligent."

Just how complex is a dolphin's brain?What "smarts" do they have that we don't know?

The dolphin's brain is very similar to the human brain in appearance, and the two have many similarities in size and texture.However, the brains of dolphins and humans do not work in the same way.

The dolphin's brain is divided into two parts, both of which have separate blood supply systems, and do not rest at the same time.When a dolphin is resting, one half of the brain shuts down completely, while the other half remains alert and handles various physiological functions.

The two eyes of a dolphin also belong to different brains on both sides. When the brain on one side is in a sleep state, it can also guard against enemies approaching it secretly.

Dolphins are "self-aware".

In order to prove whether animals have "self-awareness", scientists have designed a "sign test" method.Here's how: A paint is smeared on a test animal and then asked to look in a mirror.

Self-awareness was deemed to be manifested if one intentionally examined the color marks left on one's body after seeing one's image in the mirror.

Most of the animals undergoing the "sign test" ignore their own image in the mirror, or mistake it for another kind and fight it. Only advanced primates such as chimpanzees and gorillas will use the mirror to check their own image. Body.

Among non-primates, only dolphins and elephants look in mirrors for dyed marks on their bodies, a sign of "self-awareness."

Dolphins can be called by "name".

In a crowd, only if you call out a specific person's name accurately.In order to achieve the purpose of accurate identification and communication.In addition to communicating with dolphins using impact sounds, tick-tock sounds, jumping out of the water, and beating the water with their fins, dolphins also know how to use "names" to call each other. The purpose is also to facilitate identification and communication.

"The study found that each dolphin has its own unique vocal signature and it is this unique signal that is consistently used when communicating with other dolphins.

It is worth noting that when roaming in chaotic waters or long distances, one dolphin will also imitate the unique signal of another dolphin, and maintain contact with each other through unique calls similar to human names. "

Some professors of the dolphin team said, "Scientific research has also confirmed that monkeys and orangutans will also use special calls to inform their companions after they find food, but their calls are not as diverse and changeable as dolphins."

Dolphins recognize and mimic calls, an important step in the transition to language.Hominids also go through this stage before mastering language.so far.Dolphins are the only animals other than humans that have been found to have this ability.

After studying dolphins, scientists also found that dolphins have a large and intelligent brain.

Miel Mgen is a researcher at the School of Medicine at the State University of Michigan-Scheer-Gen-Desert-Te-Lawy-En-State University. His main research direction is molecular medicine and evolution.

He and two alumni conducted an experiment: comparing the protein-coding genes of dolphins with those of nine other animals, the results were found.Cows are most genetically similar to dolphins.Yet the two animals appeared 7000 million years apart in history.

The similarities between human beings, elephants and dolphins have also been discovered one after another. They all have a common feature: they have a smart, large-capacity brain.

After these comparisons, scientists believe that all three organisms have a slower rate of molecular evolution.

Miel Mgen explained that apes, elephants and cetaceans usually have this feature, and this feature is usually shown in mammals, which is related to the history of its production and the size of the population.

In addition, the scientists also found.In the genomes of animals with well-developed brains, many genes related to energy metabolism have "accelerated evolution".This begs a "chicken-and-egg" question—did the brain evolve because of genes for rapid metabolism, or did brain evolution drive the evolution of metabolic genes?

Many researchers believe that the latter is more likely, because nerve cells require more energy than other cells to work normally, so a larger brain requires a more efficient energy metabolism system, so it can be guessed that the brain's Evolution promotes the evolution of metabolism-related genes.

Interestingly, the scientists found that animals within the primate, cetacean and elephant lineages had the same alterations in genes involved in the metabolism that provides the brain with a reliable energy reassurance.

Seeing this, some people may ask, is the big brain really the reason for the smartness of dolphins?

The latest research has found that the nervous system genes of those intelligent animals have undergone a rapid adaptive evolution process, which illustrates the importance of nerve cells, in other words, the quality of their brain mechanisms does not depend on the size of the brain.

The absolute brain volume of an animal is not directly related to its intelligence level, but the relative brain volume is directly related to the intelligence level.

"The Atlantic bottlenose dolphin weighs about 250 kilograms, and its brain weighs about 1500 grams, which is similar to the brain weight of an adult human male of 1400 grams. The ratio of its brain weight to body weight is about 1/150, although this value It is far lower than 1/50 of human beings, but more than primates such as gorillas and monkeys."

As for the folds formed by brain sulci on the cerebral hemispheres, Atlantic bottlenose dolphins even have more and more complex ones than humans. The surface area of ​​the cerebral cortex is 2500 square centimeters, which is 1.5 times that of humans.

In addition, the density of neurons in the dolphin brain is almost indistinguishable from that of a human or chimpanzee.In other words, dolphins have more neurons in their brains than humans and chimpanzees.

"Therefore, whether in terms of the ratio of brain weight to body weight or the number of folds in the cerebral cortex, the memory capacity or information processing ability of the Atlantic bottlenose dolphin brain is comparable to that of primates."

In addition, after in-depth research, scientists have found that there are significant differences in the sleep of dolphins and land mammals.

The sleep of terrestrial animals including us humans generally consists of two different phases: slow phase and fast phase.

When such animals or people fall asleep.First enter the slow phase, then gradually deepen, after a period of slow phase, turn into the fast phase, thus completing a cycle.Different animals have different periods of fast sleep. For example, the time of fast sleep for humans is half an hour.

In dolphins, the two hemispheres sleep alternately, when the right hemisphere is inhibited.The left cerebral hemisphere is in an excited state, and after a while, the right side enters an excited state.And the left side is suppressed again.

As a result, dolphins are always able to maintain sufficient mobility and the necessary posture even while sleeping.

In case of strong external stimuli, the two hemispheres will wake up quickly to cope with emergencies.

The most special thing is that adult dolphins only have slow phase sleep and no fast phase sleep at all.As for why this is so.Scientists still can't find the reason.

These are scientific researches that prove that dolphins are very smart. In some anecdotes, they also explain the intelligence of dolphins.

There are many legends about dolphins, and some of them are true.

For example, the Greek historian Luo-tu-stu recorded such an incredible story in the book "Legend of Arion": Arion lived in the 6th century BC. The famous lyric poet and musician of the Isle of Fort, after a tour in Italy, took a boat with a lot of money to return to Colinton, on the way.Seeing the money, the sailor was jealous and tried to get rich and kill himself.

then.Arion begged to be allowed to sing another song, and the sailors agreed.

Unexpectedly, his melodious singing voice attracted countless ocean monsters!After he was thrown into the sea, one of them carried him to the shore. This mysterious animal is the famous dolphin.

Even in modern times, incidents of dolphins rescuing people have occurred frequently. For example, the magazine "Natural History" published in 1949 published a story about a lawyer's wife in Florida, USA, who was submerged in sea water and passed out. With her life at stake, a nearby dolphin pushed her onto the beach.

Dolphins can not only save people in times of crisis, but also are talented performers. They can perform many wonderful shows, such as drilling hoops, playing basketball, "shaking hands" and "singing" with people, etc., and more importantly, Dolphins have their own "signal" calls, which allow their companions to know who it is and where it is, so that they can communicate with each other.

It can be seen from these materials that dolphins are definitely extremely intelligent marine animals, which is an irrefutable fact.

Zhao Chaogang paid attention to the fact that the dolphins are very smart, so they let these dolphins come.

Indeed, the little blue elves who played with Jingjing just now are actually dolphins. In the sea, dolphins are definitely a very cute animal. Whether it is a girl or a woman, the hearts of those cute animals Most of all, there is no resistance. Zhao Chaogang has a deep understanding of this.

Isn't Xiaozi at home the best example, Xiaozi is extremely loved by Jingjing, Pingping, Nannan, and even her mother at home, so when Zhao Chaogang tried to make Jingjing stop being angry with her , he thought of using cute things to win Jingjing's joy.

However, now it is in the sea, Jingjing has been with Zhao Chaogang all the time, so Zhao Chaogang wants to show some cute things on the land, that is absolutely not possible, otherwise, how does Zhao Chaogang explain the cute things on the land? here.

However, cute things are not only found on the land, but also in the ocean. The dolphins in the ocean are the best cute things, and calling the dolphins is a very simple matter for Zhao Chaogang, and Jingjing will not do it afterwards. There is no doubt.

After all, just summoning some dolphins in the ocean is not a difficult task for a cultivator.Even Jingjing, as long as she puts her mind to it, she can use some spells to summon dolphins.

Zhao Chaogang's idea of ​​summoning dolphins to curry favor with Liu Jingjing is indeed a good idea. Looking at Liu Jingjing's happy appearance now, one can see how successful Zhao Chaogang's method is. However, things are unpredictable, and Jingjing actually wants to keep these The dolphin is gone, and he also said that there is no problem in the economy at all, which makes Zhao Chaogang feel that he is in a cocoon.

Originally, Zhao Chaogang wanted to refuse. Zhao Chaogang needed too much time and energy to raise so many dolphins. How could Zhao Chaogang have so much time and energy to waste now? However, it seems that Liu Jingjing As if she knew Zhao Chaogang's choice very well, she looked at Zhao Chaogang with hope on her face, and there seemed to be countless stars flashing in her eyes, making Zhao Chaogang unable to say any words of rejection at all.

Looking at Liu Jingjing's eyes full of hope, Zhao Chaogang replied helplessly: "Okay, okay, we just keep these dolphins."

Zhao Chaogang reluctantly agreed to Liu Jingjing's "willful" request. This was the first time that Jingjing asked Zhao Chaogang to do something since she got married, so no matter what happened, Zhao Chaogang still had to help Liu Jingjing with this matter. .

Although Zhao Chaogang's actions will only cause more troubles, but for the sake of Jingjing's happiness, no matter how many troubles Zhao Chaogang has, it doesn't matter.

To pay for the woman I love, I believe everyone will have such a fearless mentality!
ps: ?? Note: Today is New Year’s Eve, and I would like to wish you all a happy new year. Every year there will be today, and every year will have today!I wish you all have 'fish' every year!