Indonesia has an estimated 700 shipwrecks submerged in its waters, some dating back as far as the 9th century, and many have ben plundered over the years by commercial salvagers and treasure hunters. The “Reuniting Orphaned Cargos” project sees archaeologists in Australia and Indonesia trying to get to the bottom of what happened these thousands of artefacts retrieved from the bottom of the ocean, by trying to trace them back to specific shipwrecks.