What I've read right now: "The Black Sea is named "Black" due to the high concentration of hydrogen sulfide in its deep waters, which causes objects to be coated in black sludge, and potentially due to the treacherous, dark appearance of the water during severe winter storms."
What I've read right now: "The Black Sea is named "Black" due to the high concentration of hydrogen sulfide in its deep waters, which causes objects to be coated in black sludge, and potentially due to the treacherous, dark appearance of the water during severe winter storms."