7 interesting facts about dolphins

Knowledge is power. A layfhakeru knowledge is needed twice. In this series of articles we collect for you fascinating and sometimes surprising facts about the world around us. We hope that they will show you not only interesting but also practically useful.

Detection of any sentient beings is the cherished dream of mankind. We meticulously study spaceTo get an answer to the main question: Are we alone in the universe? But what if our brothers in mind live very close, but we just do not notice them?

Dolphins are not fish

Despite the fact that dolphins live in the water and look like the other inhabitants of the sea, they are much closer to humans than it seems. Dolphin - the warm-blooded animal that gives birth to cubs and feed them milk, and not spawn. It has no scales, but instead the body is covered with a smooth and soft skin. Even dolphins fins are arranged in a different way. The fins of dolphins, in contrast to the fins of fish, there is the humerus and even something like the phalanges. Most likely, the dolphins once lived on earth, but in the process of evolution back into the sea.

Brain

The brain of the adult dolphin weighs about 1700 grams, and a man - 1400. But the size of the brain itself does not mean anything yet, it is important to its structure. The study of these animals in the magnetic resonance imaging showed that the total number of dolphins nerve cells and crinkles in the cerebral cortex, even more than a man.

communication

It is known that dolphins communicate using different frequencies of sound signals that remind us of the clicking and whistling. According to the latest scientific data, the dolphins can be used about 14 000 different audio signals, which is about the vocabulary the average person. Each dolphin has its own name, to which he responds. It was found that the name assigned to the dolphin flock more at birth and persists for life.

goings-on

Dolphins usually do not live alone. They have a complex social pack structure in which each individual has its definite place. Dolphins are extremely agile, inquisitive behavior. While most of the wild animals avoid contact with people or show aggression, dolphins love to play and interact with people, especially with children. They exhibit benevolence not only to humans but also to some other animals. In the entire history of observations it has not been a single case of dolphin attacks on humans. Man on dolphin attacks constantly.

Riddle dolphins speed

In 1936, British zoologist Sir James Gray (Sir James Gray) drew attention to the great speed (up to 37 km / h, according to him), which manages to develop the dolphins. Making the necessary calculations, Gray indicated that according to the laws of hydrodynamics is impossible to achieve such a high speed with the power of the muscles that dolphins possess. This puzzle is called "Gray's paradox." The search for its solutions in varying degrees, are still going on. At different times, different groups of researchers put forward various explanations dolphins phenomenal speed, but a clear and universally recognized answer to this question is no.

The ability to regenerate

Dolphins have an incredible ability to heal itself. In the event of any injury - even large - they do not bleed and do not die from the infection, as one might assume. Instead, their flesh begins to rapidly recover, so that only a few weeks of the deep wounds, such as shark teeth, almost no visible scars remain. It is interesting that the behavior of injured animals is practically no different from usual. This gives reason to believe that the nervous system is capable of dolphins in critical situations to block pain.

recognition

The Government of India recently dolphins excluded from the number of animals and giving them the status of "persons not belonging to the human race." Thus, India became the first country to recognize the presence of intelligence and self-awareness in dolphins. In this regard, Ministry of Environment and Forests banned any speech with dolphins and called on to comply with them special rights.

You admit that dolphins are intelligent beings?