“She’d started swimming early in the morning, when the kids were asleep, when she thought he was asleep. She didn’t know her absence woke him, that the shift in the bed was an earthquake. When she climbed back in, she smelled like salt and seaweed. Sometimes her hair would still be knotted on top of her head. She tried to keep it dry. She didn’t want him to know. The problem with marrying the mermaid girl from the carnival was knowing that one day she’d swim away.”