Very nice! The music, sounds, and graphics are all awesome! And I can imagine it took a very decent amount of work to code as well! Great job!

Proper fun mechanic, takes a little while to get use to but really interesting! Creating bubbles to shoot  yourself to get around is a great idea.

Only problem I had was that some levels almost immediately kill you, where there's a roof directly above the hole or such. A brief moment at the start of each level to get your bearings would help better prepare you for the room. 

But the game looks really nice, and sounds great as well! The combination of the blue colour pallet and calming background music really work well together to make an awesome atmosphere.