Why is the Black sea called black?
There is no single and fully reliable version on this subject.
According to the Turks, the name dates back to the time when their country pursued an active aggressive policy and tried to conquer the coastal peoples.
Those, of course, offered fierce resistance, which is why the Turks called the sea “Karaden-Giz”, which can be translated as both black and inhospitable, evil sea.
According to scientists, hydrologists, the Black sea got its name from the fact that at a depth of more than 200 meters there is a huge amount of hydrogen sulfide in it, and any metal object that has been at a great depth becomes very darkened.
Experts on geographical names, toponyms, can not confirm any of these versions, and the question of the origin of the name of the Black sea remains open.