In it was the 1965 McMaster University graduation ring he lost in 1977. The package was from Alex Davis, a professional free diver and spear fisherman who runs a tourism business in Barbados.

Davis had unearthed a decades-old graduation ring, with clues to its owner. “It just felt almost like my duty to try and get it back,” he told The Washington Post. Davis, 34, looked through ...

“And as I pull back the third one, and the sand settles, almost immediately I see the band of the ring poking out of the sand.” What Mr. Davis found was a gold graduation ring lost in the ...