Dolphin-marine mammals with highly developed intelligence. They live in different seas and oceans. The most studied species is aphalines.
The name "dolphin" has roots in the Greek language. Means "child" or "newborn baby", which is associated with the similarity of screaming animals with a child's cry or cry. In ancient times it was very popular with poets and sculptors. There is a legend that if dolphins accompany the ship at the beginning of the voyage, the journey will be successful.
It is a marine predator. It feeds on various fish species and a variety of small marine animals. Movable and dexterous animals, able to develop speed in the water up to 35 kilometers per hour.
Unlike other marine animals with gills and the ability to absorb oxygen dissolved in water, they have lungs and breathe atmospheric air, periodically resurfacing to the surface.
Dolphins are social animals living in a flock of adults of both sexes. Possess a variety of sound signals for communication between individuals.
Female bears cubs for 10-18 months. It is born 30-40 centimetres in size and has been under the mother's care for a long time. Average life expectancy is 30 years.
The brain of the animal is quite developed and has an average weight of 1700 grams. The structure is similar to that of a human being, with different lobes and furrows. A characteristic feature of the physiology of the brain dolphin, the ability of the brain hemispheres is alternately in the slow sleep phase. Thanks to this, the animal is awake for most of its life.
The voice system is able to generate sounds that vary in characteristics, from low-frequency to ultrasonic, not perceived by the human ear. Hearing of dolphins is also well developed and allows you to navigate in space with the help of echolocation, catching the sound vibrations reflected from solid objects.
Social traits of animals allow them to easily make contact with a person. They are easy to train and treat people kindly. Dolphinarium classes are used to treat people with social adaptation problems. There are specialized groups to treat children with autism and other mental health problems.
The psychology of dolphins is widely studied by physiologists. Many amazing discoveries await scientists in the future.
Dolphins are some of the most mysterious creatures on our planet. They live in water, but belong to warm-blooded animals and have several significant differences from fish. First, dolphins breathe not through the gills, but through the lungs. Swimming to the surface of the sea, they take a deep breath and can hold their breath under water for a long time. Secondly, their tail is turned horizontally, not vertically. In addition, dolphins have soft and delicate skin.
Dolphins live in the seas and oceans. But some species can be found in large rivers in Asia and South America.
The length of dolphins can vary from 2 m to 4.5 m. The average weight of the dolphin is 500 kg. These animals swim very fast and their speed reaches 45 km/h.Dolphins have about 100 teeth. They eat fish, shellfish and plankton. Dolphins have live cubs, which females carry for 10-18 months, and then feed with their milk for almost a year.
On average, dolphins live 20-30 years, but some survive up to 70 years. Dolphins do not sleep, but as if hang at the surface of the water, periodically rising to breathe.
An innate sense of echolocation allows dolphins to explore the depths of the sea, avoid obstacles and seek prey. With the help of sound signals (whistling, chirping) dolphins communicate with each other. Some sounds are emitted at ultrasonic frequency, so they cannot be heard by people.
Typically, dolphins live in packs of 10 to 100 members. Dolphins coexist peacefully, hunt together and can help their relatives in case of danger by pushing him to the surface. There have been cases of rescue and rescue. This behavior of dolphins indicates a developed intelligence.
These mammals are very smart, easy to learn and friendly to people. They have emotional sympathy. Dolphins are often used to rehabilitate sick people.
