Last updated 2026-11-15 — Also known as the Bird's Nest Island, it is located in the southeastern sea of Wanning City and is the largest island along Hainan’s coast. It lies 15 kilometers from downtown Wanning and faces Wuchang Port across the sea, where boats can be taken to the island. Dazhou Island, also called Duzhuling or Duzhuling, consists of two islands and three peaks, covering an area of 4.36 square kilometers, with its main peak reaching 289.3 meters above sea level. Since the Tang and Song dynasties, it has served as a maritime landmark and is the only place in China that produces swiftlet nests. The "Oriental delicacy" — Dazhou bird’s nest — is harvested here. The island is home to various plant resources such as yam (Chinese yam), Basil, Dracaena cambodiana, and wild pepper. Animals on the island include haircocks, snakes, skinks, and a variety of birds, indicating abundant wildlife. Bird’s Nest Island is also a scenic destination for ocean viewing. The island is divided into North Xiaoling and South Dalin, connected by a 500-meter-long sandy beach. The island features unique rocks and beautiful seas, offering not only mountain and rock appreciation and ocean views but also opportunities for diving. The waters around the island are crystal clear, generally allowing underwater visibility of 5 to 10 meters. The seabed is rich in colorful life, making it ideal for underwater exploration and photography. Diving into the sea reveals a breathtaking world of vibrant colors. The island’s swiftlet caves are mysterious, surrounded by lush ancient trees and rugged rocks; especially captivating is the illusionary scene of “peaks mirrored and mountains floating on water” where two peaks face each other and two harbors look across, as well as the sight of “emerald water cascading like jade, silver ribbons tossed into the air” created by the wind stirring waves and water striking rocks. Diving into the colorful sea bed is a feast for the eyes. Here, visitors can climb to high points to watch the sunrise and sunset, as well as fully enjoy the tropical maritime experience. In 1990, it was designated as a national marine ecological and climatic nature reserve.