The Undersea Adventures of Captain Nemo theme, 1975.

[tim gueguen]

The Undersea Adventures of Captain Nemo was a cartoon produced by Canada's Rainbow Animation in 1975.  In the near future Mark Nemo and his nephew and niece Robbie and Chris travel the seas in his sub the Nautilus, solving problems for the United World Organisation.  Each 5 minute episode dealt with some aspect of sea life and other ocean themed issues.

Given its low budget(Mark Nemo's character design and the Nautilus were reworked from the 1967 series Rocket Robin Hood) and lack of composer credits the theme for the series and the background music probably came from a music library.

[ChunYinZi]

https://search.upright-music.dk/album/db88e046-27b0-435d-a5e8-0d7203cc1366?page=2

Track 065  The Great Adventure

[ChunYinZi]

https://search.upright-music.dk/album/db88e046-27b0-435d-a5e8-0d7203cc1366?page=2

Track 065  The Great Adventure

And by the way, this is a later reset.

The original source was Parry Music's vinyl series.

[tim gueguen]

Thanks for the quick answer.  I'm sure it's no surprise the other "Great Adventure" tracks were used as music within the episodes.