A Greek merchant ship dating back more than 2,400 years has been found lying on its side at the bottom of the Black Sea, off the Bulgarian Coast.
The wreck is 23m long and is the world’s oldest known intact shipwreck.
The rudder, rowing benches and even the contents of its hold remain intact.
The reason the trading vessel, dating back to around 400 BC, has remained in such good condition for so long is that the water is anoxic, or free of oxygen.
The wreck lies more than 2,000m below the surface.