Located in Bai Tu Long Bay, Van Don District, Quang Ninh Province, Bai Tu Long National Park covers 15,783ha, including 6,125ha of island land and 9,658ha of tidal land on Ba Mun, Tra Ngo Lon, Tra Ngo Nho, Sau Nam, Sau Dong, Dong Ma islands and more than 20 other small islands.
Bai Tu Long National Park supports about 2,000ha of lowland evergreen forest, most of which is on Ba Mun Island. Plant species diversity is high in the forest in the national park, with no one family dominating. Common tree species include members of the Caesalpiniaceae, Theaceae, Dipterocarpaceae, Myrtaceae and Sapotaceae families. The park is now home to 672 species of terrestrial plants and 178 aquatic floral species, of which 11 species have been listed in Viet Nam Red Book of endangered species. It also boasts 37 species of animal, 96 species of bird, 15 species of amphibian, 22 species of reptiles, 119 species of fish; 132 species of invertebrate animal and 106 species of coral. One of the most endangered animals in the park is dugong, also known as a sea cow. Apart from its biological diversity, the park boasts wonderful natural landscapes, intact beaches, archaeological sites of ancient Viet Nam and vestiges of the former busy trading port of Van Don.
