Under the name "Aquahound", he uploaded the images to Scubaboard.com, an online diving community, asking for help. Within days, users identified the location as Aruba, a Dutch island off the Venezuelan coast.
A plane's tail number was visible in one shot, and a computer search showed the aircraft was on the island on the day the photograph was taken. There was also a school poster written in Dutch.
Mr Shultz duly posted the pictures on the travel websites Cruisecritic and Aruba.com, and two days later a local woman contacted him to say she recognised the children in the photos as classmates of her son. Camera and owner were duly reunited.
Link | Photo (unrelated): CDC