I loved this as a kid. I'm a bit scared to see how bad it is as compared to today's standards.

I grew up with Marine Boy (as well as Astro Boy, Gigantor, Prince Planet, Kimba, Amazing 3 and others) when they first came out in the 1960's! Anime like Astro Boy and Marine Boy were among the first Japanese Anime that was Syndicated and broadcast in Western markets and in the case of these two shows...actually aired in the U.S and Australia BEFORE they were broadcast in Japan!
Marine Boy's Australian Debut was in 1969 ...the same year it first ran in Japan.

Today I'm now 62 years old, but still are and have always been a kid at heart who has always loved Anime ...right back to almost when it was first invented by the " God of Anime" with his first... Astro Boy (aka The Mighty Atom in Japan)

WTF who ever translated this is full of crap., This is not what was being said. Gogo WTH don't you check out the sources before showing it? I wont be watching this fake Marine Boy!

Feels a lot like the non-depressed sibling of "Umi no Triton".

What About Sewer Boi?