Interesting game mechanic. I can see where you were going and can a imagine a great dependency exloring deeper worlds.
Viewing post in Deep challenge(beta) jam comments
yes, I was (and am) thinking of making a game that would mix the speluncky idea of going to the bottom of a place making choices with a little minecraft like building mini stations for improvements, etc using materials from the sea, but for now I'll go work on the main controls and mechanics of the game.