Sometimes she would stay up late, long after he’d gone to bed, reading about ruined cities submerged beneath the sea off the north coast of Africa where she had grown up and he would strain his ears to hear the pages turn, imagining her swimming just below the surface of the water looking for headless statues or stern carved faces with seaweed beards, frightening the bright fish into shoals of colour and fan-like shapes. She had swum here too when they’d first arrived, diving deep into the coral reefs, until they turned the boat back towards the shore and made love for hours on one of the sandy beaches.