Why it was called Black sea , Red sea ?

Answer 1

red sea has an algae that grows in it that becomes a reddish color so when you look out across the water it can look and deep dark red.... not sure about the black sea.

Answer 2

Black Sea:
In ancient Greek myths, the sea—then on the fringe of the Mediterranean world—was named Pontus Axeinus, meaning “Inhospitable Sea.” Later explorations made the region more familiar, and, as colonies were established along the shores of a sea the Greeks came to know as more hospitable and friendly, its name was changed to Pontus Euxinus, the opposite of the earlier designation. It was across its waters that Jason and the Argonauts set out, according to legend, to find the Golden Fleece in the land of Colchis, a kingdom at the sea's eastern tip (now Georgia). The Turks, when they came to control the lands beyond the sea's southern shores, encountered only the sudden storms whipped up on its waters and reverted to a designation reflecting the inhospitable aspect of what they now termed the Karadeniz, or Black Sea.

Red Sea:
Normally the Red Sea is an intense blue-green; occasionally, however, it is populated by extensive blooms of the algae Trichodesmium erythraeum, which, upon dying off, turn the sea a reddish brown colour.

Answer 3

The motive for the name may be an ancient assignment of colors 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. Cf. Schmitt 1996.

Answer 4

it's the same with the Black Sea...the difference is that the Black sea is rich in plankton, and is less saltier than the Red sea...thus, when you look on the horizon, you see a BLACK sea :)

Answer 5

Black sea was black and red sea was red no ****!!!!!

Answer 6

Because that's what the first people who named it came up with. Then it stuck. Kind of like Columbus and the "Indians".