Why is black sea called as black sea?

Question

Why is black sea called as black sea?

Answer 1

cause of looting and polluting

Answer 2

the Black Sea is called so not because of it's colour but because it has two layers, one above with acvatic fauna,and one below which is lacking in fauna and also has a high concentration of salt. This happens because of the lack of vertical wind.

At the bottom of the sea are only bacterias that are producing H2S..

That makes of the Black Sea a unique in the world.

Answer 3

the designation "Black Sea" may thus date from Antiquity. The reason for the name may be an ancient assignment of colours to the direction of the compass — black referring to the north, and red referring to the south. Herodotus on one occasion uses Red Sea and Southern Sea interchangeably.

Another possible explanation comes from the colour of the Black Sea's deep waters. Being further north than the Mediterranean Sea and much less saline, the microalgae concentration is much richer, causing the dark colour. Visibility in the Black Sea is on average approximately five meters (5.5 yd), as compared to up to thirty-five meters (38 yd) in the Mediterranean.

One Bulgarian understanding of the name is that the sea used to be quite stormy. Some sources stipulate that it goes back to the time of Noah's Ark. The Black Sea deluge theory is based on that idea.

In naval science, the Black Sea is thought to have received its name because of its hydrogen sulfide layer that begins about 200 meters below the surface, and supports a unique microbial population which produces black sediments probably due to Anaerobic Methane oxidation.

Answer 4

Ahh ... let me take a wild guess ... because it's black?

The microalgae concentration in the water is very rich, causing the dark colour.  Also the sediments (especially the deeper ones) are black.

Answer 5

The Black Sea is thought to have received its name because of its hydrogen sulfide layer that begins about 200 meters below the surface, and supports a unique microbial population which produces black sediments probably due to Anaerobic Methane oxidation.

Another possible explanation comes from the colour of the Black Sea's deep waters. Being further north than the Mediterranean Sea and much less saline, the microalgae concentration is much richer, causing the dark colour. Visibility in the Black Sea is on average approximately five meters (5.5 yd), as compared to up to thirty-five meters (38 yd) in the Mediterranean.