❓ why
Why is the Black Sea called 'black'?
geographyhistory
Quick Answer
Theories include its dark, stormy waters, its oxygen-free depths that blacken metal, and ancient colour-coding of directions with black meaning north.
The Full Story
Below about 150–200 metres, the Black Sea has almost no oxygen and is rich in hydrogen sulphide, which can darken objects left in it. Sailors also knew it for sudden winter storms and dark, murky waters. Another theory is the colour system where black stood for north. Ancient Greeks first called it the 'inhospitable sea' before renaming it 'Pontos Euxeinos', the 'hospitable sea'.
Key Facts
1.The Black Sea is the world's largest body of water with an oxygen-free (anoxic) deep layer.
2.In 2018 scientists found a Greek merchant ship about 2,400 years old almost intact in its depths.
3.In Turkish it is called 'Karadeniz', literally 'Black Sea'.
YouTube Angle
Suggested video title for this topic:
"The Black Sea's Deadly Secret — No Oxygen Below 200 m"