I completely adored Marine Boy as a kid, a TV cartoon like no other.
The music and the intro are imprinted on my brain and I couldn't wait for each new episode.
I had no idea it was early Anime. The world would have meant nothing to me back then,
I never had any Marine Boy toys and I'm surprised about that, but I doubt there were many available, if any. A gumball like this Japanese one would have been terrific.
Those major predators, the giant steel crab and the huge lobster appearing in the intro, were phenomenal and I loved those fleeting images, along with the Marineville-type underwater HQ, adorable mermaid and tech to die for, namely MB's cool red sub with its glass pipe portal and who can forget Marine Boy's power boots and the fabulous Oxygum, chewing gum full of oxygen.
Did you like Marine Boy on TV?