"Where did you learn to swim?" Alek asks, treading water.

Deryn grins, and he knows he won't get a real answer. Indeed - "Glasgow," is all she says.

"I suppose some sort of fabricated duck taught you."

She laughs. Makes a quack noise that sounds nothing like a duck. Disappears beneath the water.

He turns around in place, looking for her. It's a while before she pops up again; he feels slightly relieved.

"My ma taught me, ninny," she says. "Where did you?"

"Konopischt."

"Bless you!"

He gives her a dark look; she grins; he splashes her; she kisses him.