Ancient Black Sea shipwrecks found in the Black Sea date to Antiquity. In 1976, Willard Bascom suggested that a deep, anoxic waters of the Black Sea might hit preserved ships from antiquity because typical wood-devouring organisms could not live there. At a depth of 150m, the Black Sea contains insufficient oxygen to assistance near familiar biological life forms.
Originally a land-locked fresh water lake, the Black Sea was flooded with salt water from the Mediterranean Sea during the Holocene. The influx of salt water essentially smothered the fresh water below it because a lack of internal motion and mixing meant that no fresh oxygen reached the deep waters, making a meromictic body of water. The anoxic environment, which is hostile to many biological organisms that destroy wood in the oxygenated waters, allows an a grown-up engaged or qualified in a profession. testing site for deep water archaeological survey.