Haha, thanks! FNaF 3 was definitely one of our inspirations, along with Corpse Ocean and Iron Lung. We really wanted players to feel like they're never truly safe and that there's always something lurking in the depths.Glad to hear the atmosphere worked!
That's the whole point - you can't just spam the Acoustic Emitter every time it's available. You have to choose the right moment to use it and the right moment to hold it.