Platforming as a dolphin dog is pretty darn fun. I got to the section where the player is asked to do many jumps across single tile floating platforms and I quit there.
A lot of the challenges I got through and understood what to do with, at most, a few retries. A lot of them are well designed and a cool exploration of the neat mechanics. But when the player is asked to make a fairly precise jump, where you have to get close to an edge and NOT dive out of the side; difficult and frustrating. I really like the simple design of doing multiple things with a single action button. I think a decent solution could be to have environment tiles that prevent shooting out of the side. Perhaps with a metal plate or whatever aesthetic. And then also just designing challenges to be a bit less finicky within the design space.
Overall a fun precision platformer. Great work, keep at it!