“The second riddle!” said Jeremy. Jeremy was good at riddles. But Mr. Magnus looked worried. “This is a tough one,” he moaned. He opened the scroll and read out loud, “I have twenty legs and just one wing. The sea is my kingdom and Jason my king. Who am I?” Jeremy frowned. “Twenty legs . . . one wing, . . . ,” he mumbled. He screwed up his face. He thought as hard as he could. “It’s no use,” sighed Mr. Magnus.