Red algae are highly celled creatures. Dark red because in addition to containing chlorophyll, also contains a red dye. This algae live in the sea, has a form like grass is often called seaweed (sea weed) and many-celled (shaped like a sheet). Sexually breed with smelting of sperm and ovum that produce zygote. Some red algae have economic value as a food ingredient (as a complement of refreshment drinks or as raw material jelly).algae is one of the marine biota that has a high selling value, a lot of benefits from algae, one of making the agar and medicinal properties for humans both old and young, some scientists trying to make something useful untum help humans in doing day activities