Do you know the ancestors of dolphins and hippos are relatives? 

Do you know that the left and right sides of the dolphin brain can work independently so when one side is busy at work, the other might be sound asleep? 

CGTN and the action game Aether Gazer present four four-frame comics to tell you some fun facts of the marine mammal. Watch these interesting stories to learn more about the animal.

(Cover image designed by CGTN's Liu Shaozhen)