What you’re seeing is the 1,360kg anchor from Blackbeard’s flagship, the Queen Anne’s Revenge, being raised off the coast of North Carolina. The wreck was found a few years back, but discoveries are still being made. Even swords.
The odd mess in this photo is a copper-alloy sword guard discovered in a shipwreck which is believed to be Queen Anne’s Revenge. Yes, that was the name of Pirate Blackbeard’s ship—and yes, this could be his sword.