Answer:
As we know, dolphins are mammals, a class of vertebrates characterized by having mammary glands that after breeding produce nutritious milk for nourishing the offspring, and this is one of the reasons why the young always stay close to their mother.
A baby is defenseless and does not have the strength or size needed to face some predators, another important reason why they do not separate from its mother and swim just beside her, following its movements and learning about their environment.
The bond between them makes the calf imitate and learn the behaviors and techniques for hunting from its mother and other members of the pod so that in the future he can survive alone and teach its offspring.