Sea snake, a reptile living in the sea, is a subfamily of Cobra, similar to Cobra subfamily. They are all poisonous snakes with front incisors, with a body length of 1.5-2 meters, a slightly cylindrical trunk, a slender body, a flat rear end and tail side, and a dark gray back. Living in the ocean, he is good at swimming, preying on fish and laying eggs. Distributed in China's Liaoning, Jiangsu, Zhejiang, Fujian, Guangdong, Guangxi and the offshore of Taiwan Province Province, Shennong Materia Medica records that sea snakes are used as medicine, "treating red and white dysentery, five pheasant diseases, malignant sores, moxibustion and eating, and taking one or two money knives at the end of burning".