Gelidium grows naturally. At first, it grew on rocks in the sea. Later, the demand was large for a long time, and artificial plants gradually increased. Gelidium is a kind of algae, belonging to the world red algae, distributed in the Pacific coast of the United States, Mexico, Chile, Japan and North Korea. Gelidium is a hermaphrodite plant, which generally grows on seabed rocks below the dry tide line to the water depth of 10 m.