When something surfaces not too far away from him, Peeta immediately pulls his hand out of the water. It's an animal of some kind, though not one he's ever seen before. It has some similarities to a fish, from what he can tell, but is much larger than any fish he's come across.

He's watching it carefully, trying to make up his mind about it, when it rolls slightly and - waves at him?

After a few seconds of surprised staring, everything clicks together.

"Daine?"