Despite its cancellation, "Hang On! Marine Kid" was promoted for sale by Japanese program seller K. Fujita, who in turn attracted the attention of producer Stanley R. Jaffe representing U.S. distributor Seven Arts Television, which later merged into Warner Bros./Seven Arts. Jaffe expressed interest in re-packaging the existing series and expanding it with newly animated episodes for the English-speaking market, with two provisions. First, the series needed to run for 78 episodes to ensure the program had substantial shelf-life and value for money for stations buying it. Second, it was stipulated that the Japanese-language version could not be aired in Japan before the English-language version had aired first-run in the U.S. and sold to international broadcasters. With the deal agreed to, "Terebi Doga" launched production again, preparing the elements of both "Dolphin Prince", (the three monochrome episodes re-worked and re-shot in color), and the 13 completed episodes of "Hang On! Marine Kid" for use in the new series, as well as gearing up to producing approximately 65 more new episodes as required to produce the complete 78-episode run. Scripts and storyboards were prepared in both English and Japanese and with a fast turnaround in the production process, the episodes were delivered to Zavala-Riss Productions in the U.S. for English dubbing (the unit that also dubbed "Speed Racer", featuring the same voice actor cast).