Many artifacts from the Whydah Pirate shipwreck are found encased in concretions—hardened mixtures of sand, clay, and rock from the ocean floor. These formations occur due to a chemical reaction between the salt in seawater and the materials of the objects, especially iron, creating a solid mass around them. While these lumps may resemble ordinary rocks, x-rays can reveal the hidden treasures within. #WhydahGally #PirateShipwreck #UnderwaterArchaeology #HiddenTreasures #HistoryUncovered #MuseumM

25 Heartbreaking Titanic Artifacts — And The Powerful Stories They Tell