The vibes on this are insanely good! This feels like a Lovecraftian tone in a fishing game, and I'm totally down for that.
The game loop feels so tight and polished for a game jam; I'm impressed! The only thing I wished I could do was stop the line at any depth. I had trouble catching the last couple of fish types (eventually giving up) because I'd frequently see them, overshoot, and then be unable to retry until I finished winding to the bottom.
This is an amazing game. Well done!