- red algae - marine algae in which the chlorophyll is masked by a red or purplish pigment; source of agar and carrageenan
--1 is a kind of alga, algae
--1 is a member of Rhodophyta, division Rhodophyta
--1 has part: carpospore
--1 has particulars:sea moss; Irish moss, carrageen, carageen, carragheen, Chondrus crispus; dulse, Rhodymenia palmata; red laver, laver