If we compare animals in terms of intelligence, then the king of animals will not be a lion at all. The first place will be occupied by dolphins, and the second - by elephants. Monkeys will get only the fourth place. What explains such a "arrangement" in the "hit parade" of abilities?

As you know, in monkeys, visual memory is better developed than auditory. Dolphins are exactly the opposite. They remember sounds much better than pictures. Thanks to this, dolphins distinguish each other by whistling. Each dolphin knows the voices of individuals from its flock and has its own personal "name". With the help of whistles of different lengths, tonality and melody, dolphins communicate with each other. One dolphin, not seeing another, can “whistle” to him which pedal, right or left, you need to press to get the fish. With the help of a whistle, you can also describe to a friend the size of an obstacle invisible in muddy water. And echolocation impulses will help the dolphin to recognize the obstacle - they play an even greater role in the life of dolphins than vision.

Dolphins are excellent imitators. They not only recognize sounds when listening, but also imitate them themselves. The creak of a rusty door, the gurgling of water, the ringing of bells, the chirping of birds - talented dolphins can portray this or that noise in such a way that you cannot distinguish it from the real one with your eyes closed! They can even copy human speech or laughter. If you record such an onomatopoeia on film and then listen at a slow speed, the resemblance to the human voice will clearly manifest itself.

These marine inhabitants well distinguish shades of many colors, except for blue. Memorizing geometric shapes is also not difficult for them. Moreover, dolphins are distinguished from each other by flat and voluminous forms. They will never confuse a paper circle or a square with a ball or a cube. In Soviet times, such an experiment was performed on dolphins. The trainer showed the ball to the animal, then hid the toy behind the screen. When the screen was parted, the dolphin saw a flat shield and a voluminous box. A ball was hidden in one of the objects. The dolphin only needed to pull the loop connected to the desired object so that the ball fell out. So, even when the experiment was first performed, the dolphins always chose the box and never tried to look for the ball inside the flat shield. So experience has shown that dolphins can distinguish between flat and voluminous objects.

Dolphins easily find attractive objects for them. If you show a dolphin, say, a fish or a ball, and then remove it behind a screen, the dolphin will easily guess where and how to look for the object. The dolphin's eye is also good - you just have to look at the dexterity with which they jump through a hoop or throw the ball into the basket!

Dolphins are very emotional and this can affect the learning process. For example, in the course of scientific experiments, an angry or irritated dolphin makes more mistakes than a calm one. If a person hits or punishes a dolphin, the animal will refuse to perform his tasks and work with him in pairs. Therefore, when training and researching dolphins, they are encouraged with food, games, as well as affection and kindness.

Dolphins have well-developed imitation behavior. They quite easily remember and repeat the actions of other individuals. For example, off the coast of Australia in 2008, a flock of dolphins was seen, where the leader was able to stand on his tail. Other members of the clan quickly adopted this ability, imitating the leader. It is worth considering that this was not a requirement of the hierarchy. The dolphins decided to repeat the trick of the leader out of interest and curiosity.

Scientific articles describe a case when a female dolphin, having lived for some time in a dolphinarium, began to repeat the numbers after its inhabitants, although she was not specially trained for this. After she was released into the wild, she taught the members of her pack to repeat these tricks.

But dolphins can imitate not only each other. There is a case when two dolphins, who lived in the same pool with a fur seal, began to copy his actions. They slept in the same positions as the cat, adopted his manner of swimming, paddling their fins like flippers and keeping their tail motionless, although they did not have a strict need to repeat his actions. Dolphins have even learned to rub their stomachs while lying on their backs near the surface of the water, and yawn, imitating a cat!

The dolphin's brain stores a large amount of information obtained in many ways. But in addition to its accumulation, dolphins know how to use it. They are not alien to the research approach, and it manifests itself in them more often than passivity or caution. They quickly assess the situation and adjust their behavior to it, they are well oriented in what is happening.

I recently posted a post on LiveJournal about dolphins. About their extermination by people
Some comments, from seemingly reasonable people, struck me .. - Well, how do you not understand, - they wrote to me under this post, - After all, dolphins eat almost all the fish and people, Danes and Japanese, have nothing to eat ..
- Well, people kill wolves so that wolves do not eat our sheep, sheep, cows .. Wolves are also smart animals ..
The plan of the World Government immediately popped into my head that no more than 500 million inhabitants should remain on Earth.
And in Russia, 10 million is enough, Margaret Thatcher said publicly.
This information is in the public domain, anyone who is interested can study this plan for the depopulation of people on Earth.
There is nothing, they say, to feed all these billions of people. Work to reduce the population has been going on for a long time.
This is also well known. Alcohol, drugs, GMO products, vaccines, vaccinations, chemicals in dishes, in cosmetics, invented diseases. Well, wars, of course, are also there ..
They kill medicine in Russia, that's why, too. Why do we need healthy people?
During the time of Peter the Great, amaranth was almost destroyed. But before that, Russ baked amaranth bread. They ate amaranth, which can very quickly saturate a person.
There are many vitamins in amaranth.
But people are being forced to eat specially the wrong food. Many plants and vegetables that are useful for humans are banned.
And I will never believe that by killing dolphins, a person ceases to be hungry. A person can eat a lot of things. And a lot of things to get enough of, and besides fish, in the end.
Dolphin killings remind me of Sacrifices. This is the answer of these killings. Since dolphins are intelligent creatures. By the way, sometimes it’s interesting for anyone, dolphins can communicate telepathically. Strong telepaths can understand what they want to convey to a person. Dolphins know each other by name.
Sharks are afraid of dolphins. Why? A flock of dolphins can attack sharks with a powerful psi-blow.
In 1987, a group of scientists arrived at the Batumi Dolphinarium. Among them was Natalya, a telepath. So Natalya was able to establish a telepathic connection with the dolphin Lada.
She was very happy and told about the fact that they have to perform stupid tricks in order not to die of hunger. She also told that the trainer hides fresh fish, and gives them rotten))
Somehow he hit Lada in the muzzle (or face?) When Natalya asked the trainer about all this, he was clearly confused. How did Natalya find out all this?
The trainer could not even imagine that a stupid animal could tell all this ..
Once upon a time, on the island of Crete, there was a cult of the Dolphin. Ancient sculptures of dolphins, images of dolphins are found all over the island. People of the past knew how to get into telepathic communication with dolphins.
In 1949, the American psychoanalyst John Lilly, known for his work in the field of neurophysiology and psychiatry, learned from his fellow zoologists that cetaceans have a brain that surpasses the human brain in absolute weight. This fact shocked Lilly so much that he delved into the study of dolphins for many years. After 12 years, the researcher expressed a striking idea that on our planet, perhaps, there is another truly intelligent humanoid, comparable to a person in terms of his mental development. And in 1967, his sensational book “The Mind of a Dolphin. Intelligence beyond the human. The scientist was not afraid to declare to the whole world that people would have to free themselves from the usual ideas about “reasonable man” as the crown of creation.
Dolphins are the second intelligent Race on Earth.
If the Man can again get in touch with them telepathically, the dolphins will be able to tell us a lot about the mysteries of the oceans..

For decades, scientists have been trying to figure out exactly how the dolphin's brain works. Capable of learning, having their own social skills and clearly understanding the behavior of people, these mammals seem to have come from another planet - they are so different from representatives of the rest of the animal world.

Over the past fifty million years, dolphin brains have evolved to unprecedented proportions. One of the latest published studies, authored by marine biologist Lori Marino, claims that dolphins and whales have evolved backward from land to the ocean depths. Here are a few facts that fully support these bold conclusions.

Dream
Sleep deprivation kills any living being - as sure as a gunshot wound. Only twelve days without rest is enough for a highly organized brain to turn off the main functions. But dolphins have learned to cheat the system: these amazing mammals can turn off, at will, half of the brain so that it can rest.


Language
Dolphins remain the only creatures in the world (other than humans, of course) that have their own language. They communicate using a complex combination of clicks and sounds. Moreover, the language of dolphins is complex enough to accurately coordinate the behavior of the entire flock. Researchers estimate the linguistic reserve of an ordinary dolphin at 8 thousand "words" - for an average person it is only 14 thousand, despite the fact that only about 1-2 thousand words are used in ordinary life.


Logical thinking
Scientists have found that dolphins have the rudiments of logical thinking. This is the highest form of intelligence development that no one expected to find in mammals. Dolphins were able to solve various complex riddles, find answers to complex questions, and even adjust their behavior depending on new circumstances set by humans.


Dimensions
The brain of an adult dolphin weighs more than the human brain - 1700 grams and 1400, respectively. In addition, dolphins have twice as many convolutions in their cerebral cortex as we do.


self-awareness
The latest data obtained by scientists may indeed signal the presence of a serious social structure in dolphins. They possess not only self-awareness (some other animals can boast of this), but also social consciousness, practiced in conjunction with emotional empathy.


Echolocation
The total number of nerve cells in a dolphin is higher than in humans. This is partly due to the ability of mammals to echolocation: they literally see with their ears. An acoustic lens located on the head focuses ultrasound, which the dolphin uses to "feel" underwater objects, determining their shape.


magnetic feeling
Another amazing property of the dolphin brain was the ability to sense magnetic poles. Dolphins and whales have special magnetic crystals in their brains that help these mammals navigate the expanses of the world's oceans. The same feature can also explain the reasons why the whales are thrown ashore: guided by the readings of their "GPS", they simply do not notice it.

In one of the New York museums, American scientists presented forty photographs taken from a computer screen. They reflected the gradual transformation of a person into a dolphin. This is under hypothetical conditions, if people would completely move to live in the Ocean. Moreover, information about dolphins was not put into the computer.

The machine had no idea about their existence. The result of the calculations was stunning. The computer with all its processors gave out not only the appearance of the "aristocrats of the sea", but also their physiological characteristics!

Seeing a dolphin in the sea is considered a very good sign. To communicate with them closer is an incredible happiness. These glorious creatures with intelligent eyes, and look, they will say something in response.

And they know how to speak. This was found out by scientists, putting forward the version that dolphins communicate in their own language. There is an assumption that many years ago we spoke the same way as these cute mammals. It's just that our speech then evolved, and theirs remained at the same level. Is it possible for us to restore the former mutual understanding?

People who spend a lot of time with dolphins say they sing songs about famous events, fish, and everyone they meet, rescue, or accompany. And their constant chirping is very pleasant to the ear.

Interestingly, in a similar way, marine intelligences are able to communicate with various types of sea creatures. Moreover, dolphins can also make quiet sounds. But only a small percentage of the world's population has the ability to hear them.

In the meantime, elementary communication between a dolphin and a human takes place with the help of hand signals and sign language. Although, the trainers of these smiling creatures claim that sometimes all this is not required. Because, mammals accurately understand everything they hear.

Working with people is generally fun for dolphins. And they are always willing to help us in everything. They often provide escorts for ships, jumping and playing nearby. Another interesting feature of these creatures is that they live for today and do not let sad memories ruin their lives. They keep their own stories, but see no reason to let history collide with today. Oh, these marine inhabitants could tell a lot ...

Intelligence surprised scientists

Well, scientists have been trying to decipher the incomprehensible language of dolphins for a long time. And George Zipf, a linguist at Harvard University, developed his own way of doing this. He counted the number of times different letters appear in a typical English text. Indeed, in a meaningful text, several identical signs cannot stand in a row, they occur with some periodicity.

Then the luminaries plotted the frequencies of the letters in a certain order and on a logarithmic scale. The result is a sloping line with a slope equal to -1. For texts in other languages, the slope was the same. An absolutely random set of letters, which does not carry any information, is located horizontally on the chart, without any inclination.

That is, any abracadabra that has passed through the sieve of mathematical formulas will show a zero result on such a graph. Thus, scientists studied the whistle of dolphins using the Zipf method, and obtained the same slope coefficient as that of human tongues. That is - carrying information!

“So, dolphins are close to us in terms of intelligence,” the scientists concluded. Now it's up to us to understand what these "whistlers" want to tell us?

DIRECT SPEECH

Vladislav TARCHEVSKAYA, a researcher at the Laboratory of Bioacoustics, has been working on the problem of dolphin sound communication for many years:

- It is possible that humans and dolphins are the most intelligent creatures in the universe. Marine life is fraught with extraordinary opportunities. The frequency range of the dolphin's sound signals significantly overlaps the human one. Judge for yourself: if our sound communication occurs in the frequency band up to 20 kHz (and musicians are able to distinguish up to 40 kHz), then in dolphins this “ceiling” is raised to 300 kHz. Moreover, as a result of our research, it turned out that our “brothers” have about the same levels of organization of sounds as a person: six. Sound, syllable, word, phrase, paragraph, context.

In humans, semantic meaning arises from the 3rd level, that is, from the word. But at what level it begins in a dolphin, we do not yet know. But in terms of complexity, the organization of sound signals in humans and dolphins is almost the same. In general, there are many notable parallels between the two species - Homo sapiens and Orcinus orca. Their lifespan is about the same as that of humans, they mature at the same age, are very sociable and live in families. And they have their own dialects - something like our languages.

Everyone has their own name

There is a legend that dolphins are reincarnated people who previously inhabited Atlantis, which disappeared under the waters of the ocean. Sounds nice. And yet, there is a version that dolphins, like people, have names that they call each other.

DIRECT SPEECH

Pavel Vedenin, psychologist:

- It is true that dolphins are the second intelligent creatures on earth. And, if they lived on land, Darwin would have determined that man originated precisely from them. Dolphins read human thoughts at a great distance. Have you ever watched dolphins frolicking in the sea? They are not at all afraid of people and like to swim quite close to the swimmers. Probably, they would play with us close to the shore, but, obviously, it is too shallow for them. There are cases when dolphins showed quite high "intellectual" abilities.

And getting in touch with them is quite easy. And this has been done for a long time. I do not mean simple training, although it is impressive. But I would like to focus on the fact that these animals are not only trained, but also capable of training, that is, of the conscious fulfillment of the tasks assigned to them. The logical chains that dolphins build are much longer and stronger than any other animal can link.

Aliens from outer space live in the sea

In one of the New York museums, American scientists presented forty photographs taken from a computer screen. They reflected the gradual transformation of a person into a dolphin. This is under hypothetical conditions, if people would completely move to live in the Ocean. Moreover, information about dolphins was not put into the computer. The machine had no idea about their existence. The result of the calculations was stunning. The computer with all its processors gave out not only the appearance of the "aristocrats of the sea", but also their physiological characteristics!

There is other circumstantial evidence that dolphins are the closest relatives of modern humans. For example, a Chinese biologist shocked the scientific world by claiming that dolphins are descendants of aliens from outer space. Here's an amendment: Professor Hsu Sensung has no doubt that some dolphins have a higher IQ than humans. He also claims to be in telepathic contact with them.

Wards of the professor transmit signals to him. He perceives them as thoughts and images. From which he drew: the ancestors of dolphins flew to Earth on interstellar ships 100 thousand years ago. They were forced to leave their own planet due to terrible environmental problems. However, on Earth, their technology proved unusable, and centuries later, the civilization of stellar aliens fell into complete decline ...

Sometimes "gray ufonauts" paralyze a person at a distance... Someone will grin, thinking that these are just modern myths, fairy tales of people with a sharply unbridled imagination. But let's not rush to draw the line. What modern science in the field of dolphinology is now discovering completely covers the most incredible fantasies and legends about the life of toothed cetaceans a hundredfold.

One of the latest hypotheses was put forward by an astronomer from the Kennedy Space Center - Simon Clark. In his opinion, dolphins are the indigenous inhabitants of one of the moons of Jupiter. “Forget the ‘little green men’ — the smartest creatures after humans in our solar system may be dolphins,” the scientist said.

The fact is that when the Galileo space station launched by NASA a few years ago flew only 400 kilometers from the moon of Jupiter Europa, its sensitive radio detectors recorded some movement under the ice in the ocean.

Sound sensors picked up a whistle coming directly from under the ice. Then a directive from the highest echelons of power ordered NASA to classify all data about the Galileo program. Therefore, the details of the discovery became known only recently.

“After these facts were transmitted to Earth and subjected to careful computer analysis,” Clark said, “scientists were amazed. The audiograph showed that the frequency of sounds coming from Europa's ocean was identical to the sounds made by terrestrial dolphins! The error rate is 0.001 percent.

Although at the moment it is impossible to say what kind of creatures are "talking" in the oceans of Europe, scientists hypothesize that organisms similar to our earthly dolphins live on Jupiter's distant moon.

DIRECT SPEECH

Doctor of Medical Sciences, Senior Researcher at the State Oceanarium of Ukraine (Sevastopol) Lyudmila Lukina:

- For a long time, the science of marine mammals considered dolphins to be secondary aquatic. In the ice age, in conditions of extreme cold, they went under water, adapted, turned into cute charming creatures. And there was plenty of evidence for that. And now there is a theory that this is a parallel human civilization.

There are disputes about the origin of cute cetaceans, various hypotheses are discussed, but the mystery of the dolphin pedigree has not yet been solved. In any case, scientists are still unable to say anything worthwhile about their origin. The boundless distances of time remain for us an intriguing and, alas, unsolved mystery.

http://cloudwatcher.ru

Recent studies by biologists have led to a sensational conclusion: dolphins are the most intelligent creatures on the planet.

Dolphin is an intelligent animal. New arguments in favor of this hypothesis were given by recent studies by scientists from the University of Pennsylvania. For quite a long time, experts have studied the language of dolphins and have received truly amazing results. As you know, sound signals occur in the nasal canal of dolphins at the moment air passes through it. It was possible to establish that animals use sixty basic signals and five levels of their combination. Dolphins are able to create a "dictionary" of 1012! It is unlikely that dolphins use so many "words", but the volume of their active "vocabulary" is impressive - about 14 thousand signals! For comparison: the same number of words is the average human vocabulary. And in everyday life, people manage 800-1000 words.

The dolphin signal, when translated into human language, is a kind of hieroglyph that means more than a single word. The fact that dolphins have a language that surpasses the language of humans in its complexity is a real sensation.

Rare abilities

Nature sometimes comes up with amazing mysteries. And one of these mysteries, without a doubt, remain dolphins. Despite the fact that they often live in the public eye, we know very little about them. But even the little that is known about these animals is amazing. Dolphins have truly amazing abilities. So amazing that American John Lilly, who studied brain physiology at the University of Pennsylvania, called dolphins a "parallel civilization."

First of all, scientists are surprised by the volume and structure of the dolphin brain. Researchers from the University of Pennsylvania placed the animal in the womb of a magnetic resonance scanner and saw that the structure of the nervous system in dolphins is so perfect that sometimes it seems as if it is better developed than in humans. “The brain of a bottlenose dolphin,” says Professor Laela Sai, “weighs 1,700 grams, which is 350 grams more than that of an adult male. In its complexity, the brain of a dolphin is by no means inferior to the human brain: there are even more folds, tubercles and convolutions in it” . The total number of nerve cells in a dolphin is higher than in humans. Previously, scientists believed that the dolphin's brain is so large because the nerve cells in it are not as densely packed as in humans. However, they were convinced of the opposite: the brain in the cranium is located in the same way. True, outwardly the brain of a dolphin is more like a sphere than the brain of homo sapiens, which is slightly flattened. Dolphins have association areas of the cortex that are identical to those of humans. "This fact indirectly indicates that dolphins can be sentient," marine biologists say.

The parietal, or motor, lobe of the dolphin's brain is larger in area than the parietal and frontal lobes of humans combined. Why did nature endow these creatures so? What is it - the result of centuries of evolution or, perhaps, the "legacy" of intelligent ancestors?

Curiously, the occipital optic lobes of dolphins are extremely large, and they don't rely much on sight. Then what are they for? As you know, dolphins "see" to a greater extent with their ears, emitting ultrasounds. An acoustic lens on the dolphin's head focuses the ultrasound onto various objects. Thanks to this, the dolphin "sees" with its ears. He "feels" an underwater object, determining its shape.

The inhabitants of the deep sea have two organs of hearing: one is normal, the other is ultrasonic, says researcher Mario Etti. - The outer passage is closed, which increases the possibility of hearing in the water. The receptors of another organ are located on the sides of the lower jaw, they perceive the slightest sound vibrations. A dolphin hears with its lower jaw much better than we do with our ears. The hearing of dolphins and killer whales is 400-1000 times sharper than a human. Due to the many cavities in the blowhole (nasal valve), acoustic vibrations arise that propagate over vast distances in the water. So, blue whales and sperm whales can hear the sounds made by their counterparts thousands of kilometers away!

As already mentioned, dolphins masterfully master their speech apparatus. Blowing back and forth the same portion of air, they give rise to such a range of sounds that their variations and quantity far exceed the sounds made by a person. At the same time, each dolphin has an individual voice, its own pace and timbre of speech, manner of speaking and "handwriting" of thinking.

It is very curious that the hearing and speech organs working simultaneously create an amazing richness of the sound palette. The capabilities of the mammalian brain are so high that it is able to analyze separately the spectra going at a frequency of 3000 impulses per second! In this case, the time interval between pulses is only about 0.3 milliseconds! And therefore, for dolphins, human speech is a very slow process. They are talking at high speed. In addition, they are able to isolate in the speech of their fellows such details that people are not even aware of, since our ears cannot catch them.

But that's not all. Scientists conducted a series of experiments proving that dolphins can exchange very complex messages. Here is just one example. The dolphin was given a certain task, which was to be completed by his brother, who was in a neighboring enclosure. Through the wall of the enclosure, one dolphin "told" the other what to do. For example, take a red triangle and give it to a person. Both dolphins were rewarded with fish. However, it was clear that they did not work for a fee, they were fascinated by the very process of creative experimentation. The researchers conducted thousands of experiments, the tasks were constantly changing, and not once did the dolphins make a mistake. The only possible conclusion from this is that dolphins perfectly understand everything that happens and navigate the world like people.

The biologists who conducted the experiments were surprised to notice that often the test subjects themselves began to manage the course of the experiment and its organizers - people ... The energy of creative search was transferred to dolphins, and they suggested that the experimenters complicate and modify the task, an experimental model for dolphins who tried to switch roles with them. So who studied whom?

Cousins ​​in mind?

One theory for the origin of dolphins is that they and other cetaceans are descended from ancient animals that left land for the sea. As possible ancestors, the 20-meter Basilosaurus and the fossil Dorudon are called. Neither of them possessed as many brains as dolphins have today. Why do animals that have gone to sea to live need brains that are superior in structure to humans? After all, sharks have been swimming quietly in the same water for hundreds of millions of years. They have a very small brain, and it is enough for them to catch prey.

There is another interesting hypothesis. Some scientists believe that in the process of evolution there was a period when the distant ancestors of man, for some reason, were forced to leave the land and live in the water for some time. They had to get food by diving to great depths. Due to constant oxygen starvation, the brain volume of these creatures has increased markedly. Then, after another change in habitat conditions, our aquatic ancestors returned to land ... But maybe not all of them returned, but some branch remained in the ocean and evolved into dolphins? And the current inhabitants of the deep sea - our "cousins ​​in mind"? Not so long ago, Japanese sailors discovered and brought ashore an unusual bottlenose, which had an atavism - "hind limbs", very reminiscent of feet...

Why do dolphins have such a powerful intellect? They do not build houses, do not create communications, they do not have television and the Internet. However, it may turn out that they do not need it. They have enough of the colossal opportunities that they have. Perhaps dolphins already live in the virtual world of their consciousness and they simply do not need external signs of comfort and all that we call the benefits of civilization. And they look at us, people, from the height of their intellect as backward creatures, unable to understand them, or be of any help to them, and besides, in many cases, acting barbarously towards other creatures. Their commonality is a real parallel civilization.

And therefore it may turn out that humanity is looking for brothers in mind in the depths of the Universe in vain, while they are very close by. You just need to take a closer look at them, and, perhaps, then a person will discover all the richness of parallel worlds. We have entire ant megacities, bee cities and urban bird nests at our side. Why not third-party worlds - with their own laws, daily routine, history? But it will be difficult for a person to come to terms with the fact that there is no need to look for romantic parallel civilizations, and all previous searches are empty efforts. Although from time to time, astronomers record signals in the vastness of endless galaxies that resemble a dolphin's whistle.

Alexander Belov

OPINIONS

Brain work

Dr. Jerry Presley, Marine Life Specialist at the Woods Hole Oceanographic Institute (USA):

There are hypotheses that explain the evolution of the brain of mammals by their aquatic lifestyle. The brain in this case is considered as a cybernetic system consisting of elements-neurons, the reliability of which can be increased by increasing the number of spare elements. In other words, if there is a weak link, then it is better to duplicate it. The reason for the increase in the dolphin brain was oxygen starvation. Deep diving is a non-standard work of the brain. And therefore, the one who can hold his breath and whose brain does not suffer at the same time has an advantage. For example, the sperm whale has a larger brain than the blue whale because it dives to a depth of about a kilometer.

Olga Silaeva, Doctor of Biological Sciences, Leading Researcher at the Institute of Ecology and Evolution Problems. A. N. Severtsova:

It is believed that man differs from animals in the presence of a language system. However, it is not. Language as a means of communication between individuals exists in almost all animals and insects. Dolphin vocabulary - about a thousand words. That is, dolphins have a highly developed speech culture.