I imagine I'd be throwing up my breakfast overboard, otherwise. [ So yes, very lucky. She gestures to a seat near him, because if it's all the same she'd still prefer to sit down when the next wave buoys the whole ship.

But while waiting for the invitation, ]

An ocean of memory and dreams sounds almost pleasant, if you don't think about all those other being lurking beneath. Kind of like the ocean itself. The comparison makes sense.