How is dolphin sleep different from humans?

For humans and other terrestrial mammals, sleep is a partial or total unconscious state in which active (consciously controlled) muscle activities pause as well as the senses as Visual and olfactory are rested.

>>>Translated dolphin language has been translated

But with marine mammals like dolphins or whales, their sleep is very different. Instead of sleeping in the normal way, these animals have a form of sleep called 'semi-hemispherical slow-sleep sleep'.

Also known as deep sleep, this way of sleeping is thought to help the brain synthesize new memories and recover from day-to-day activities.

By the time of rest, one side of the hemisphere of the dolphin will temporarily stop working, and the dolphin will close one side of the opposite eye (for example, the left hemisphere of the brain stops working, the right eye will aim and vice versa) . The remaining hemisphere will monitor what's going on around you as well as control your breathing ability.

Sometimes, dolphins will lie dormant in the water surface while sleeping or swimming slowly. Scientists have also recorded cases where dolphins are kept in a sleeping tank at the bottom of the tank and occasionally take a breath of air.

According to a 2008 article in the Journal of Neuroscience and Biological Behavior, within 24 hours, each hemisphere's hemisphere has four hours of deep sleep. Dolphins also have REM sleep, during which the eyes work very quickly. This stage of sleep usually occurs in humans.

There are three main reasons why dolphins evolved this type of sleep.First , dolphins tend to sink if not one side of the brain hemisphere works, because their breathing must always be consciously controlled.

Second , a hemisphere's sleep with slow brain waves allows dolphins to remain alert to dangers while resting.

Thirdly , this type of sleep helps dolphins maintain physiological activities such as sending motor to help maintain body temperature in cold seawater.