It's that time of the year again. I randomly remember a cartoon and just cannot think of its name!
There was this - rather old - cartoon about a sort of merman (?) superhero. Not sure if he actually had fins, but he mainly operated under water...
As far as I can remember he looked a bit like Spock from Star Trek, and I thought his name was Prince Nemo or something like that, but I can't find anything???
The animation was quite basic, so possibly 60s or so??
Please help. :)