The ending is ambiguous; there's no definite, neat ending. The possibilty of what probably happens undercuts the small bits of happiness that show up by the end, the only ones in the whole story. The majority of the book is fairly bleak. But i've noticed how Hunt seems to have a knack for using words to emphasize themes of her books: water is (obviously) a major part of The Seas, & the words make it feel like there's water everywhere. And she does the same with the concept of flight in The Invention of Everything Else. It's really interesting.
Has anyone else read The Seas? What did you think of it?