This live-action sci-fi adventure serial (produced by Hanna-Barbera) originally aired as part of "The Skatebirds" from 1977 to 1978. In the fall of 1979, "Mystery Island" continued to air on "The Skatebirds" when the show returned in a shortened 30-minute version on Sunday mornings until January 1981. In 2005, episodes resurfaced on Boomerang and were rebroadcast as part of "Captain Caveman and the Teen Angels."