Hello!
The concept looks quite fun, I'm imagining a fairly fast paced runner which is one of my favorite type of causal game. You also have a very charming art style! The project scale looks doable too for a solo dev.
I'm interested to see how hallucinations and the ocean pollution tidbits will be will be implemented into the game. I feel like a pause+pop up for info might be a bit jarring, since it'll pause gameplay.
If you need a playtester, I'd be happy to give your game a shot! Good luck!