Really chill platformer. I loved the player controller in the beginning as it made me feel like I was navigating in water. However once you appeared to get out of the water it still felt floaty, and no longer made as much sense. Could be a cool contrast to change up the control on the different levels.
I think I ran into a bug where the music controls were set to 0 visually, but were in effect, and then I was confused if that was all the way on or off, then couldn't get back to the main menu, but was able to refresh the page.
Also it might be because of an incomplete system, but I was confused what the shells that were counted on the screen were for, and would have been nice to see a count of the items that were needed to unlock the different areas.
I had fun playing over all!