Purple sea urchin is mainly distributed along the coasts of Zhejiang, Fujian, Guangdong, Guangxi, and Hainan in China. It is an important fishing species in the southeast coast of China and has high nutritional and medicinal value. Distinguish it from "Dalian Purple Sea Urchin". Due to the purple color of the sea urchin in Dalian, it is known as the 'Dalian Purple Sea Urchin', but in reality, they are not the same species. Living in rocky reef areas with a water depth of 3-07 meters and thriving growth of large seaweed species, they prefer to inhabit the backlit areas or crevices of rocks, often drilling holes in their habitats and hiding within them. By utilizing the movement of the legs and spines, one can navigate underwater Dian, move a few centimeters every 5 minutes.