Treasure-hunting divers seek mother lode of riches from 400-year-old shipwreck

Roughly 30 miles off the coast of Key West, Florida, sits a ship called The Dare. Its exact location is a closely guarded secret because, deep below the crystal-clear water, through hundreds of years of sand and shells, the crew believes there is a pile of sunken treasure. The Dare is owned and operated by the company Mel Fisher's Treasures.