Thank you so much for the feedback, I agree completely that the music doesn't really fit - I was just trying to follow Mark's suggestion and there wasn't really much choice available to meet that criteria: imgur.com/a/nXAwZlj
What sort of sounds would make it sound fishier? It's already like a wet slappy sound.
A bit of air control could be interesting, I agree. Perhaps some sort of double jump mechanic?
The first few obstacles actually have many solutions! But it's really hard to figure them out so I put a hint for 1 because otherwise people just won't play the game.
I'm really glad you liked the art style :)