Sundarbans lies in the vast delta on the Bay of Bengal known as Sundarbans Delta formed by the super confluence of the Padma, Brahmaputra, Meghna (rivers across southern Bangladesh) and the holiest river of India The Ganga. The national Park is spread across two countries; India and Bangladesh. In 1987 the national park is also titled as UNESCO world heritage site. There is no any exact figure about the area covered by national park however it is estimated that covers an area in about 4110 square KMs in which more than 41% area is occupied by water bodies. The site is intersected by a complex network of tidal waterways, mudflats and small islands of salt-tolerant mangrove forests, and presents an excellent example of ongoing ecological processes.
It is the world largest Mangroves eco region located on the coast forms the seaward fringe of the delta. The Sundarbans Mangrove Eco region covers an area of 20100 square kilometres in totals.
As per best on our knowledge never seriously the sundarbans national park is censured perhaps as per the last censured report which was done in the year of 1903 by David Prain there were 245 genera and 334 plant species habitat in the national park however most of the mangrove forests characterized by expertise of Rhizophoraceae, Avicenniaceae or either Combretaceae group.
“Algal Flora of Sundarbans Mangals” a book written by Neera Sen, Kumudranjan Naskar describe best the beauty of Flora of the national park.