“Looking at the elementary schoolers in their colorful T-shirts from various day camps, Percy felt a twinge of sadness. He should be at Camp Half-Blood right now, settling into his cabin for the summer, teaching sword-fighting lessons in the arena, playing pranks on the other counselors. These kids had no idea just how crazy a summer camp could be.”

“Of course: because it was in one of the camps that he went blind. They had performed some failed experiment on his eyes in the camp.‘No, not summer camp,’ Franny had to tell Lilly, who had always been afraid of being sent to summer camp, and was unsurprised to hear that they tortured the campers.”

“Summer camp: the second worst camp for Jews.”

“Yeah, flattering." Percy raised Riptide. "But actually I`m the son of Poseidon. I`m from Camp Half-Blood.”

“Just tell me, Percy, do you still have the birthday gift I gave you last summer?" I nodded and pulled out my camp necklace. It had a bead for every summer I'd been at Camp Half-Blood, but since last year I'd also kept a sand dollar on the cord. My father had given it to me for my fifteenth birthday. He'd told me I would know when to "spend it," but so far I hadn't figured out what he meant. All I knew that it didn't fit the vending machines in the school cafeteria.”

“Don't underestimate Camp Half-Blood.”