Atlantic shipwreck richest ever

Deep sea salvagers from Tampa-based Odyssey Marine Exploration may have retrieved the "richest sunken treasure ever discovered: hundreds of thousands of colonial-era silver and gold coins worth an estimated US$500 million from a shipwreck in the Atlantic Ocean."

Over 500,000 coins have been salvaged from the wreck at an undisclosed site, but the nationality and age of the ship have yet to be established. Experts believe that the ship may be a 17th century English merchant ship which sank off the coast of England.