Sarah was a curious second-grader who loved exploring the ocean. One day, while swimming near a coral reef, she stumbled upon a shimmering object hidden among the sea plants. Intrigued, she called out to her friend Fatimah, who was exploring nearby.

"Fatimah, come look at this! I think I've found something special," Sarah said, carefully picking up the object.

Fatimah swam over and examined the mysterious item. "It looks like an old locket," she observed. "I wonder who it belongs to and how it ended up here?"