What does Konah mean by I'm in the deep blue, Nineveh would do!?

Is this related to Langston Hughes?

Sounds like the story of Jonah... yk Bible stuff, kinda important. Seems to be saying that he's in the belly of the fish, like Jonah was, and he'd rather be in Ninevah, which is where Jonah was supposed to be in the first place. You should read the story of Jonah to get a full understanding of whatever this is.