[He rubs his back a bit, still wincing and trying to get the sea water off. He holds up a hand for her to wait.]

Nah, just sea water hurts a lot. It's cause of the whole "Devil Fruit" thing. Normal water, not so much. Unless it's dumped on me hard. Really, I'm fine. It just needs to dry off is all.

[Hence why he's still trying to swat the water off with his hands.]