I liked this game! Main issue was the difficulty.
In some sections, the lack of variable jump height really messed with me in terms of the precision you have to perform, and also the hitboxes felt a tad bit unfair at times. I also wasn't a huge fan of the design choices for some of the obstacles. I loved the pixel art on the character and environments, but the conch shells/fire didn't resonate with me, especially on the one level where the entire thing was fire, it felt overused to me.
I enjoyed the music, looped a bit awkwardly once or twice, but the music was composed well and I felt like it fit the idea spot on.
In terms of the theme and idea, it was a really, really good idea and I think it was done quite well! I would've liked it to be more fast paced, I often found myself going to fast and trying to do cool stuff with the platforms by trying to catch myself on them, but the animation took so long I couldn't, but other than that, it was a really creative idea that I feel fits the theme perfectly.
Good game! :)