Red algae: Quick Facts

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Facts

Also Known As	rhodophyte • Rhodophyta • red seaweed

Photos and Videos

Close-up of marine red algae Asparagopsis armata, showing dense, feathery, bright red fronds underwater.

Diagram illustrating the life cycle of the red alga Polysiphonia, showing stages including tetrasporangium, tetraspores, male and female gametophytes, spermatangia, carpospore, cystocarp, and carposporophyte, with arrows indicating the sequence and transitions between reproductive phases.

An edible seaweed

representative algae

Bright green algae blooms distort the surface of water.

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Topics

Laver carola Gelidium Bangia Polysiphonia Palmaria Rhodymenia Corallina Floridae Gracilaria Kelp ciliate Myxomycetes Green algae Brown algae Sea lettuce apicomplexan Chytridiomycota Xanthophyta Protozoan