Coral reef of Xuwen county is the largest natural protected region with the most species and the most intact area along our continental seacoast.

• 徐闻珊瑚礁是我国大陆沿岸面积最大、珊瑚种类最多,连片最为完整的珊瑚礁自然保护区,有腔肠动物门的珊瑚18科65种;