Dolphins are aquatic mammals. It is a small or medium-sized toothed whale. Widely living in the world's oceans, the inland sea, and river estuaries near the brackish water distribution, some species are found in inland rivers. Usually like to live in groups, and prey on fish, squid, etc.

The skin of the dolphin is smooth and hairless, the body is strong and flexible, good at jumping and diving, is the fastest mammal in the water. They have developed sonar systems, rely on echolocation for their activities, and have excellent hearing in both water and air.

They have complex brain circuits, good memory, and can learn many actions under the training of human beings.

They are one of the animal families with the highest IQ. They have a gentle, friendly, lively, and active character, which is widely loved by people all over the world.

When it comes to dolphins, the most impressive thing is that dolphins save people.

Some experts say dolphins rescue people out of a caring nature. Dolphins are mammals. Although they can swim underwater, they need to rise to the surface of the water every once in a while to take a breath.

Dolphins often lift their newborn calves to the surface to breathe. Even the larger calves are usually able to reach the surface on their own, but if something goes wrong, the mother will use their kisses to gently lift them.

In addition, they will use the same method to care for sick or injured companions. Gradually, this technique became a kind of rescue nature for dolphins.

They will lift not only their kind but also other animals and even all kinds of inanimate objects that are not actively moving in the water.

On the other hand, dolphin calves are vulnerable to shark attacks, so the mother will keep a close eye on the sharks and make it her duty to drive them away.

But some scientists believe that attributing the saving behavior to dolphin nature is a gross underestimate of animal intelligence.

As we have mentioned before, dolphins have very developed brains, and the part related to emotion is particularly strong.

They can understand human emotions, detect our fear or panic, and even sympathize with our situation, so they will actively help humans.

When you watch dolphins, you'll see them jump out of the water. Researchers have made a special study of this phenomenon. Dolphins don't jump out of the water because of what we tend to think like they're athletic or something. Specifically, there may be several reasons:

1. Get rid of parasites. The main reason dolphins jump out of the water is to get rid of parasites. Dolphins usually stay in the water, but when the parasites appear on their bodies, they become unwell, which can make them sick, and they try to get rid of the parasites by jumping out of the water.

2. Breathe. Dolphins jump out of the water for other reasons. Dolphins, for example, need to come out of the water regularly to breathe and can't swim all the time. When they breathe, they might not just pop their heads out of the water, they might jump right out of the water.

3. Happy mood: Dolphins have emotions of their own, and when they are happy, they may jump out of the water.