Marine Boy was one of the first color anime cartoons to be shown in a dubbed form in the U.S., and later in Australia and the United Kingdom. It was originally produced in Japan as Undersea Boy Marine by Minoru Adachi and animation company Japan Tele-Cartoons. It was sold outside of Japan via K. Fujita Associates Inc., with Warner Bros / Seven Arts Television handling worldwide distribution of the English language version.
The show revolves around a talented boy who is further enhanced by some sophisticated inventions. With these, he serves with the underwater policing agency, the Ocean Patrol, in making Earth's oceans safe.
The series is set in the future, when humankind has pioneered the world's oceans, establishing great facilities for undersea ranching, mineral and oil exploitation, research, and some underocean communities.