Even before reading your description, I was immediately brought to an underwater world!
You did a good job in keeping everything cohesive. Every song sounds like they were written for the sole purpose of conveying what the game is about, which is really important for game music.
In terms of critique, your music seemed to peak with crackling sounds a few times, so controlling your volumes will be important for future projects.
My personal favorite was Dancing with the Fish Spirits! Really enjoyed the boingy bubble sounds and the textures you used to make the song feel more alive! Great job!