There's a price to pay for eating one. [Sanji's caught on how Nami glossed over that issue, but for now he sees no reason to keep it from Katara. She's a smart girl; he'll bank on her keeping it to herself. And if not, that's a bridge they'll cross later]
He can't be submerged in water or he sinks like a hammer. [And now that most of the meal is done, Sanji turns to face them, leaning lightly against a counter]
[Action]
He can't be submerged in water or he sinks like a hammer. [And now that most of the meal is done, Sanji turns to face them, leaning lightly against a counter]