What is the common name of the class of red algae?

Scientific Classification:
Red algae belong to the phylum Rhodophyta.
Within this phylum, there are two major classes:
Bangiophyceae – mostly simple, unicellular or filamentous forms.
Florideophyceae – mostly complex, multicellular forms (includes many seaweeds).
Common Name:
The general/common name used for this group is Red Algae.
The name comes from the pigment phycoerythrin, which reflects red light and masks the green of chlorophyll, giving them their characteristic red color.
Key Features:
Mostly marine organisms, found in both shallow and deep waters.
Lack flagella (non-motile reproductive cells).
Store food as floridean starch.
Important in reef-building and as sources of agar and carrageenan (used in food and industry).
Significance
Ecological Role: Contribute to primary production in oceans and help form coral reefs.
Economic Importance: Used in food (like nori in sushi), pharmaceuticals, and biotechnology.
Scientific Importance: One of the oldest groups of eukaryotic algae, with fossil records over 1 billion years old.
In short: The class of red algae is commonly called “Rhodophyta” or simply “Red Algae.”
Would you like me to also prepare a comparison table of Bangiophyceae vs Florideophyceae so you can clearly see their differences?