Is the Red Sea red?
Updated February 23, 2017 | Factmonster Staff 
The Question:
Is the Red Sea red? If so, why?
The Answer:
Of course it's not actually red, but sometimes it appears that way. Located between the East African coast and the Saudi Arabian peninsula, the Red Sea got its name because of a type of algae called Trichodesmium erythraeum, which is found in the sea. When these blooms of algae die off they appear to turn the blue-green color of the ocean to a reddish-brown.
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-The Fact Monster
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