Why Is the Red Sea Called the Red Sea?


The Red Sea is one of the warmest, saltiest, and possibly reddest seas around the world. It contains an algae called trichodesmium erythraeum, which turns blue-green water, reddish-brown. Hence the sea was then known as the Red Sea.
2 Additional Answers
The name Red Sea originates from a Greek phrase called Erythra Thalassa. Some archaeologists suggest that it is thus named as a result of the seasonal blooms of a water plant known as Trichodesmium erythraeum.
The Red Sea gets it's name from a type of algae that lives in it. This algae called Trichodesmium Erythrauem has blooms that die and when that happens, the sea become tinted a reddish brown color.
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