That makes sense to him. Human bodies being far lighter than his own, them being forced to float by the air in their lungs wasn't far-fetched. He lets go of the edge of the pool to be able to tread water, though that takes a fair amount of effort on his part to be able to stay up where they could still talk.

"Maybe if you do that and we're both there it'd be assumed that it's all copacetic?" After all, enough people have seen him down there by now to know he's perfectly fine.