Dream - naturally and necessarily need all mammals on the planet.However, the truth about the dream of dolphins for a long time is a mystery to researchers.Is Dolphins sleep with one eye open?Once it was thought that these animals have a rest "fits and starts" between breaths of air or even deprived of sleep in general.Both of the latter assumption proved to be wrong.Today, scientists have known the true answer to the question of how dolphins sleep.
interesting information about dolphins
Dolphins - warm-blooded mammals of the order Cetacea - rightfully earned a reputation as one of the most mysterious creatures on Earth.The characteristic of dolphins nicknamed - "People of the Sea" - emphasizes the fact that their intellectual potential is so great that they are smarter and smarter all the other animals of the planet.
dolphins live in flocks.Among these beings is developed mutual assistance to each other, sometimes reaching to the sacrifice.Dolphins are able to talk, making choices about ten different sounds as usual and at ultrasonic frequencies.Furthermore, they have a unique hearing, which acts on the sonar principle and enables to determine not only the distance to a subject or object, but even its size and shape.
Dolphin is one of the fastest marine animals - in the water it is capable of speeds up to forty kilometers per hour!These animals are carnivores, they eat mostly fish.The lifespan of a dolphin is about thirty years.
In the wild, dolphins, many are willing to contact people.Dolphin rescues from the danger of his kinsman, just will float to the rescue and the man.He pulled the drowning man ashore, driving away the shark indicate the way to seafarers.This fact has long been proven, but the essence of this phenomenon has not yet been able to explain.
Do Dolphins Sleep?
dolphins Sleep is vital - in the same way as all other mammals.However, it is in these animals is special.Conducted observation and study brain activity revealed a well-defined picture of how dolphins sleep really.
In order not to drown in sleep or becoming a victim of a predator attack, these marine mammals sleep "half."One hemisphere of the brain during sleep animal receives proper rest, while the latter continues to watch, monitoring what's going on and responsible for respiratory function.That is why the Dolphins sleep with one eye open: If the rest right brain, left eye is closed, and vice versa.This dream takes about six or seven hours a day.And when the dolphin wakes up, have both hemispheres begin to work.
dolphins sleep
unusual at first glance feature "half-hearted" dolphin dream does not stop him at the same place all the phases, from the fast to the deep, while providing the animal a proper rest.The scientists watched closely to see how dolphins sleep and to identify common patterns.This always occurs at a shallow depth near the surface of water.Due to the high content of fat tissue in the body of the dolphins slowly lowered down.Every now and then an animal, being in a dream, the water hits the tail and floats to the surface to breathe air.Thereafter, it is again slowly lowered to depth.
Breathing dolphin dream
Feeling when surfacing to the surface change of environment, a dolphin opens blowhole (nostril).Breathing very rapidly: because of the structural features of the respiratory tract, he is capable of inhaling and exhaling at the same time.During his stay under water blowhole remains securely closed tight valve.
Newborn dolphins do not sleep for a whole month!
Studies have shown: the assumption that dolphins never sleep - is a myth.However, it opened one more interesting fact.Researchers University of California at Los Angeles found that newborn cubs dolphins and whales during the first month of his life not sleep at all!In addition, the kids also forced their mothers to remain active all the time ...
Tiny Dolphins are on the move constantly, surfacing for air every three sets of thirty seconds.And only a month into their daily routine begin to appear short periods of sleep, which gradually approach the normal characteristic of the adult animal.
American biologists have suggested that such behavior decreases for babies dolphins and whales in danger of being eaten by predators, and also gives them the opportunity to maintain a stable body temperature.In this regard, they have raised an interesting question about the availability of a certain reserve in mammals, allowing them a long time to go without sleep, without experiencing harm to health.
