Why was the Red Sea named the Red Sea?

this is a derivation from the biblical “sea of reeds”—nothing red about it, just an etymological fluke.

I though is was the red algae that grows in it

This is what I know about the Red Sea.

The name Red Sea basically is a straight forward translation of the Greek term Erythra Thalassa and Latin term Mare Rubrum. The name of the sea doest not point out to the colour of the water because it does not have red colour water, though it may indicate the regular blooms of the red-coloured cyanobacteria Trichodesmium erythraeum which grow close to the water surface.

The Red Sea basically is a cove of the Indian Ocean amid Africa and Asia. The link to the ocean is in the south in the course of the Bab el Mandeb sound and the Gulf of Aden.

Taking up a portion of the Great Rift Valley, the Red Sea has an exterior area of around 174,000 square miles and has an utmost depth of 8,200 feet.

@shorty; what is your source for that information?

back in the old days in the roman time they had a war in it and people used sorts back then and when the war was over the water turned red from all the blood so since then they called it the red see