Why Black Sea is named as Black Sea,and Red Sea as Red Sea????

Black Sea: :It isn't true that no organism can live in the Black Sea, although it is true that below about 200 feet, it is not hospitable to life. The oxygenated surface waters, less saline (salty) than the Mediterranean, have fish, dolphins, mollusks, sea grass, anemones, plankton, etc. There are several hypotheses regarding the name: (1) ancient assignment of colors to compass directions, black for north, and red for south.

(2) the dark colour of the Black Sea's microalgae-rich deep waters (or because it is/was stormy) (3)the anoxic dead zone about 200 feet below the surface; or because H2S in the deep waters would coat the surface of metals (like sounding lead) black.

Red Sea: there are also many hypotheses regarding the origin of "Red" in Red Sea:

(1) compass direction (south = red)-the historian Herodotus is said to have used both words interchangeably in referring to this sea; (2) seasonal blooms of red cyanobacteria; (3) the color of the surrounding desert and mineral-rich mountains, or the name of local tribe; (4) or--a Hebrew to Greek mistranslation of the Exodus biblical reference which is really the Reed Sea; (5) red corals

I've been in the yellow sea and it does have a kinda yellowness to it. I've also been in the red sea and it is the most amazing place i've ever been. No idea why it is called Red Never been in the black see and no idea why it is so called.

Black sea is named black because the salt MAKES it seem dead... An dead is black... RED SEA is redish due to things growing in it... not blood sorry lol

black sea is called "black sea" because no organism can live in it because of the high salinity (salt level)

red sea is called "red sea" because it is red. a type of coral live in this sea...... which are red in colour..... which gives the redish appearence to the water!!!!

black sea is full of salt, red sea is full of red algae

idk? thats a hard ?