Thanks for the comment!
I'd love to hear what controls you found vague. I'll keep it in mind when making future games!
About the screech button, it was hard to balance. The intent was for it to be a last resort which would scare both the big fish and nearby fish, though it's a bit quirky.
I admit that the monster was a bit clingy, I should've added a small cooldown for him to return, cuz he just swims right back when he's interested and just heard another sound.