This place was opened to the public in March 2000 but it was designated by the state government as a sanctuary in 1996. This 24ha sanctuary is the only remaining patch of a once extensive mangrove forest in that area.

The site is fed by both saline and fresh water, thereby creating a unique ecosystem within which mangrove flora and fauna, and freshwater aquatic species can flourish at the same time. The site is also an important refuge and feeding ground for many species of resident birds, as well as several migratory species from northern Asia.

 In fact, some 80 species of resident and migratory birds have been recorded here.

The Sanctuary emphasises educational and awareness activities, especially among students from the 15 surrounding schools. For this purpose, a 1.78km-long boardwalk, interspersed with resting huts, observation towers, and an outdoor classroom have been built for the convenience of visitors. The site will soon accommodate an environmental education centre with basic facilities and equipment, including an exhibition area, multipurpose hall and a research laboratory.