“Come have a swim with me,” Percy says, pressing his face into my arm and biting affectionately. “No thank you,” I say, for not only do I loathe putting my head beneath the water, but also there are several reasons why I had best not remove my trousers at this moment. Though I’m not sure they’re doing much good to hide the fact that I am very much enjoying the sight of him slick and salty from the sea.