Most zoos and aquariums prefer trainers to have a degree in the life sciences or animal related subjects. After gaining this education, most prospective trainers obtain a marine mammal internship relating to husbandry or as a research assistant and then move up to a trainer position.

Becoming a sea lion trainer (or marine mammal trainer) in 2026 typically requires a Bachelor's degree in Marine Biology, Zoology, or Psychology to understand the complex science of animal behavior and conditioning. Beyond formal education, the industry is highly competitive and relies heavily on hands-on experience. Most aspiring trainers begin with unpaid internships or volunteer positions at accredited aquariums or marine parks to learn the basics of animal husbandry and habitat maintenance. Key skills include being a strong swimmer and SCUBA certified, as many tasks occur in the water. Aspiring trainers should also pursue certification through organizations like the International Marine Animal Trainers' Association (IMATA) to stay current with ethical standards and modern positive-reinforcement training techniques.