I'm not precisely sure if I actually found a softlock or not, but it seems I am stuck in a series of rooms that I can't get out of, as the only door out is locked on the wrong side, and the only other exit I can find is blocked by a very fast geyser that I can't seem to dash past.
I like the variety of enemies and other objects in the underwater environment. I just wish I could figure out where to go! 😅