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CGP EDU Academic Team
Published on: August 21, 2026
Trichodesmium erythraeum which imparts red colour to sea water of red sea is a :
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A
Trichodesmium erythraeum is a type of filamentous cyanobacteria, also commonly known as blue-green algae. Although it is part of the blue-green algae group, it contains a high concentration of the red pigment phycoerythrin. Under certain conditions, such as seasonal blooms or when the cells die and decay, this pigment is released and turns the typically blue-green water of the Red Sea into a reddish-brown or pinkish-red hue.
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