Discovery of three 200-year-old shipwrecks 'tantalising'

Marine archaeologists say they're thrilled to examine a well-preserved 200-year-old shipwreck three-quarters of a mile deep in the Gulf of Mexico.

And they say they're even more elated as their expedition that wrapped up this week found two more vessels believed to all be related.

Researchers led by a team from Texas State University in San Marcos are calling it the deepest shipwrecks - 4,363 feet down - that archaeologists have systematically investigated in the Gulf of Mexico and in North America....