Ganbare! Marine Kid

Yet another expansion of the Marine Boy series. This time 65 episodes were added to the 1966 series and all 78 episodes were sold to the US. The broadcast history of the show in Japan was slightly more complicated, with only the first 36 episodes of the 78 shown at first but later on all 78 were shown, out of which 65 are contained in this entry and 13 in the Ganbare! Marine Kid series.

Produced as a short experimental trial series of only 3 episodes and filmed in black and white, Dolphin Prince aired on Fuji TV on Sundays at 7.30pm. The episodes featured young Dolphin Prince, his mermaid friend Neptuna and Dr. Mariner, with stories entitled "Secret Of The Red Vortex", "Call Of The Sea" and "Attack Of The Sea-Star People".

Kid was brought up on a small island which floats on the Carribean Sea. He lives a pleasant life with many animals as his companions. However, this changes when he learns that his dying father is not his real father. Before he passes away, his foster father reveals to Kid that his real father is actually Captain Morgan, the pirate who rules the seven seas. Kid decides to set off in search of his real father, only to learn about his death. Other pirates began to hunger for the title of ruler, one of them being the notorious pirate Tiger Hook. In order to protect the seas, Kid became the pirate king of his father's ship.

Based on the long running (1958 to 1992) gag manga by Sonoyama Shuji.