When divers in the Baltic Sea first saw the wreck on the sonar, they thought it was a fishing boat.But when they went to investigate, they found a 19th Century sailing ship, "loaded to the sides" with champagne, wine, mineral water and porcelain.
They counted more than 100 bottles of champagne in the wreck, off the coast of Sweden.
And now Tomasz Stachura, of Polish diving group Baltitech, believes the shipment could have been destined for a Russian tsar.