Sea Change

I stopped walking, my flats sinking into the sand. Behind the boy was nothing but fog, and I realized how alone I was. "You lost?" The boy called, waving one arm at me. "Not at all" I replied defensively, squaring my shoulders. "I was just exploring." He came closer "it's not a great idea to go exploring by yourself on siren beach," he said. "Why?" I demanded, suddenly annoyed that this boy had appeared out of nowhere. He swept his gaze over my face. What was he thinking?