Some courses encompass an overview of different animals including marine animals, but most courses are specific to land and birds. Aquatic medicine is a specialty as you decide what field you want to practice. Today more than 58,000 veterinarians are professionally active in the United States. They provide a wide variety of services in private clinical practice, teaching, research, government service, public health, military service, private industry, and other areas. The job responsibilities vary based on the type of field you choose.
Veterinary medicine offers jobs from company research, field study to private practice.
Many veterinarians work in labs developing medicine. The veterinarian that is mostly identified with is the one in private practice. I guess I became a vet because of my combined interest in science, medicine and animals. When I was young my mother loved German Shepherds and had 4 of them. I took care of them and found I enjoyed helping them.