Dolphins are a kind of creature that humans prefer. They live in the water, but they are a kind of mammal. In the process of observing them, we will find that they are always swimming around and will not stop to rest, which gives us an illusion that dolphins will not sleep. But in fact, dolphins also go to sleep, but their sleep is different from that of humans and most other animals.
Researchers have done a more detailed study of dolphin sleep patterns. During the observation, they found that dolphins sometimes closed one eye while swimming. Then, the researchers monitored their brain waves and found that one of their left and right brains was sleeping. That is to say, the left and right sides of the dolphin's brain take turns resting. When one side is resting, the other side is still working, which enables them to keep swimming and know the surrounding environment, so as to avoid their own death due to accidents.
Some animals need to hibernate. There are many reasons for hibernation. One of the important reasons is that they cannot regulate their body temperature. Another important reason is that they do not have enough food. But dolphins are different. They have no reason to hibernate. It is a mammal and a warm-blooded animal. Warm-blooded animals generally do not need to hibernate, their body temperature is constant. In addition, dolphins have plenty of food in the water and do not need to hibernate to conserve their strength.
