Problem description:

For whales and dolphins, they breathe with their lungs, and if they don't breathe, they will suffocate. Then why did you die after being stranded?

Analysis:

Unlike some terrestrial animals, aquatic mammals have no exoskeleton or other protection to keep water. After being stranded, the sunshine of the sun is undoubtedly a fatal blow to these animals who are used to being moistened by water. If they don't return to the water early, they will be sunburned to death. After a long time, the dolphin's skin will be tanned and bloody, which is very tragic. This is the main cause of its stranded death, and breathing and weight are not problems. In the dolphin performances seen in some places, sometimes dolphins often appear out of the water for a short time, which is similar to stranding, and it is not a big problem. Therefore, if this aquatic mammal is stranded and dies, the main reason is the exposure of the sun, as CCTV once said in Animal World. Moreover, aquatic mammals such as sea lions, seals, seals and walruses are not afraid of being stranded. They still spend a lot of time on land, and their weight has not overwhelmed them.