D.s. Murphy said this quote

Wait—what?” He’d said the last statement so casually, I almost didn’t grasp its significance. “There are merrow who want to destroy the human race?” I pictured a hundred thousand Sebastians, capable of punching through picnic tables and moving faster than we could even see them. It would be a slaughter. A mermaid apocalypse. I almost laughed at the thought, but the impulse died in my throat. I felt sick. I couldn’t believe I’d wanted to kiss him just a few moments ago.