Agustin Aliaga's marriage to Juani Sanchez has lasted 37 years, even though he lost his wedding ring just months after they tied the knot - but now the ring has been found.
Jessy Nisos said she found a gold wedding ring while scuba diving last month off Benidorm in Spain.
She posted a photo of it on Facebook and gave the wedding date inscribed on it: February 17, 1979.
She asked people to share the post, saying "it got lost a long, long time ago because it was covered with sediment".
More than 80,000 people did share the post, with word finally reaching Mr Aliaga and Ms Sanchez in the north-east city of Zaragoza. Ms Sanchez said she telephoned Ms Nisos and both of them burst into tears.