The real reason for dolphins to save people is mainly their nature, because dolphins are mammals that breathe with their lungs, and it is their nature to take care of their children. Because they breathe with their lungs, they need to leak their pectoral fins out of the water regularly so that they can breathe fresh air. However, the newborn dolphin can't swim to the sea quickly. At this time, the big dolphin will grab the pectoral fin of the baby dolphin with its beak or teeth, which will make the pectoral fin of the baby dolphin leak out of the water. This kind of care is an instinctive behavior of dolphins. When they find that human beings drown, they will stimulate their instinct and lift human beings out of the water. Not only humans, but also when they encounter other floating objects, they will lift them to the water.

Dolphins are gentle animals, and unlike other aquatic animals, they have their own language system. Although they also have sight, touch and taste, they mainly rely on hearing, so when dolphins communicate, they mainly rely on sound waves to transmit them. Individual dolphins can use sound waves to determine whether there are other animals and things around, and multiple dolphins can communicate with each other through sound waves to achieve the purpose of interaction. Studies have shown that when dolphins fight against foreign enemies, they will transmit them through sound waves, and then launch attacks in a unified way.