Dolphins are social animals of mammals. They like to live together in groups of dolphins, so that they can not only resist foreign enemies, but also take care of each other. Dolphins are very united, and their situation is delicate. Dolphins who live together for a long time will also have feelings. When one of the dolphins is attacked, the other dolphins will unite and resist the invasion of other animals. Even fierce sharks will make a detour when they meet a group of dolphins.

Although sharks are fierce, they can't resist the attack of a group of dolphins. In addition, when one of the dolphins is sick, the other dolphins will take care of them. When one of the dolphins gives birth, the other dolphins will take turns to take care of the baby dolphin until the baby dolphin can master all the survival skills.

Because dolphins breathe with their lungs, they don't live in too deep water. And dolphins like to live in a warm environment, so most of them are distributed in tropical waters. Like the Pacific Ocean, Atlantic Ocean, Indian Ocean and other sea areas, there are a large number of them. Of course, there are also some special species, which are only distributed in the sea areas of some countries.