
"Marine Boy" is produced in Japan but is intended for US audiences; it is one of the first color cartoons to come from Japan, soon to be sharing syndicated screen space with the likes of "Kimba the White Lion" and "Speed Racer."

The ultrasonic voices of Splasher and his friends awaken a dangerous monster plant which has been sleeping for millions of years.

A cruise ship carrying Professor Fumble and the world's greatest scientists disappears.

The powerful pirate, Captain Kiddo, is challenged by the Queen of Pirates to see if he can defeat Marine Boy.

An Ocean Patrol boat is found with the crew missing; the search takes Marine Boy to a strange and forbidding land of ancient Vikings, where they are living under the domination of a cruel queen.