A Dutch navy sergeant was scuba diving off the coast of Aruba when he lost his waterproof digital camera. It washed up six months later on the shore of Key West, Florida, where it was discovered by Paul Schultz. He turned it on, downloaded the pictures, and then posted them on an Internet message board in the hope of locating the camera's owner:
Link | Photo (unrelated): CDC
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
"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"
How else would the plane be in the photograph unless it was there the day the photograph was taken?