Yevgeni Krylatov - Aquanauts 1979

The Aquanauts (1979) - a sci-fi movie about aquanauts (like "astronauts") doing their hard job in the oceanic depths.
The main theme is both beautiful and strong:
A motorcycle ride episode made in the best traditions of eurocult:
There is yet a melodic song so typical for the composer:

Links:
imdb.com/title/tt0197218/