Shipwrecks can offer incredible opportunities to find historic treasures and artefacts. Essentially underwater time capsules, wrecks can hold hoards of valuables that would have been lost forever if not for the excavation efforts of divers and marine archaeologists.

From Roman-era ships to a galleon worth $17 billion, read on to take a deep dive into some of the incredible shipwrecks currently being excavated around the world. All dollar values in US dollars.