Indeed, very well done with this game. Very strong contender!
I gave it 3 tries, and even sat the sub in a ditch to AFK and make food. High score was 3720! I read your other comment about not actually having a kraken or further story, which is a shame. Every 1k I was hoping something spooky would show up.
Super chill, audio was done beautifully. Art was polished and consistent.
One of the issues was that, to me, the floaties felt more like a hindrance than a power-up after 2, as it was just kinda too quick to control. That, and the dialogue wasn't up long enough to read, while also trying to pay attention, along with it kinda taking up too much of the screen. I think a standard sub-title sorta thing along the bottom would have worked a lot better for that.