Last Wednesday, Aug. 7, Connor Murphy was sitting on a blanket on the Coral Street beach in Beach Haven when he overheard a person saying that someone had lost his wedding band on the beach.

Knowing he had a metal detector, Murphy sprang into action a little later.

“I was out there for a while when I got a hit, and that turned out to be a paper clip,” he said. “But a few minutes later I got another hit, and it turned out to be the wedding band.”

His next mission: find the owner. Murphy, a resident of Mount Pleasant, N.Y., walked down Pearl Street, knocking on…