"Edward Teach," the man says. "Blackbeard" Teach, known more commonly by his colorful nickname, was a real-life pirate who sailed the West Indies and Caribbean in the late 1600s. His ship ...

Some historians argue that there is little evidence that Blackbeard was a particularly violent pirate and, instead, relied on his ferocious appearance to intimidate people into surrender.

Except for a sprinkling of gold dust—less than one ounce so far—no treasure has been found aboard the vessel likely piloted by Edward Teach, the British-born pirate known as Blackbeard.