Mose tapped the screen of his mobile phone to zoom in on a photograph of his wife, Yordanos, pointing to a mole under her eyebrow.
"She has a recognizable mark here," the 26-year-old Eritrean said in a park in Rome; after fleeing compulsory military service back home, Mose now lives in an Italian reception center for migrants.
He has not seen Yordanos since May 26 when they left Libya, packed by people smugglers on to two separate boats bound for Italy. He was rescued, but her boat sank in the Mediterranean.