It's true. Hainan red coral is produced in tropical oceans and is called "sea flower". In fact, it is neither a plant nor a mineral, but a fossil condensed from countless coral remains. It is naturally produced in the sea, grotesque, white with snow, red as blood, green as jade and yellow as gold, among which red is the best. Red coral is as red as fire, which was called "fire tree" in ancient times. Most of them live in the deep sea below 100 meters. Red coral is mainly used for jewelry products, mostly for carving figures, flowers and birds and other handicrafts.