I really loved the theming with this one, I really enjoy how you play with a more literal interpretation, 'beneath the surface' and a more esoteric one with the dream! Here is my feedback:
+ Really evocative and interesting concept.
+ I like how you use the format itself and thought about how it would work as a physical object. I love the tracker on the side and the way the map is laid out.
- The layout itself feels a bit cramped. I think the text needs a bit more space to breathe between each paragraph.
- The flow of the document is a bit confusing; I was unclear as to where I should start reading it.
- Minor inconsistency with how the dream tide is referred to, submerged should be deep.