We were walking up the beach, on the sand as the tide moved out toward the ocean. I was holding Zeke's hand, talking with him about sea things. "I didn't know jellyfish swam this close to the shore during the spring," he said in 5-year-old wonderment. "I bet that drift wood is as old as The Old Man and the Sea. I think a horseshoe crab's blood can be used to treat cancer."
"Look," I said.
"What is it, Dad?" he asked.
I picked up a shell out of the deep, hot sand and held it in my open hand.