Where Do Jace Amaro Jersey Dolphins Sleep

Dolphins, like whales, do not have involuntary breathing respiratory systems like humans and other animals do. Thus, they must be conscious to breathe. They can stay underwater for about 30 minutes and then need to rise to the surface to breathe through the blowhole. Jace Amaro Jets Jersey Because of this, dolphins cannot go into a full sleep pattern, and instead only half of their brain sleeps at a time, as confirmed by electroencephalograms. They are in this state on and off for about eight hours a day. This semi conscious state also keeps them alert enough to sense predators.

A Calvin Pryor Jersey common way that dolphins sleep is to swim very slowly along the surface, hardly moving, which allows them to continue breathing. Italian researchers studying dolphins in the Mediterranean have studied this phenomenon, and found that the sleeping dolphins usually swim in pairs side by side. They typically close one eye, and although this does not always coordinate with which particular side of the brain stays alert, it does coordinate with their partner's open eye. Usually the two open eyes are looking at each other. If the dolphins switch positions, they also change which eye each has open. This type of sleeping behavior is called "rest swimming" or "logging." It is common in wild dolphins, and usually associated with calm water.

Rapid eye movement sleep, the type of sleep in which dreams occur, has been recorded very rarely in dolphins. Some scientists speculate that dolphins do not dream at all, while others theorize that dolphins dream for very tiny amounts of time, probably in seconds. REM is also associated with atonia, a type Authentic Calvin Pryor Jersey of paralysis that stops animals from acting out their dreams. It would be very difficult for dolphins to dream at length since they are usually swimming to some degree even while sleeping, and cannot do so if experiencing atonia.