The Sun­dar­bans man­grove for­est, one of the largest such forests in the world (140,000 ha), lies on the delta of the Ganges, Brahma­pu­tra and Megh­na rivers on the Bay of Ben­gal. It is adja­cent to the bor­der of India&rsquo,s Sun­dar­bans World Her­itage site inscribed in 1987. 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. The area is known for its wide range of fau­na, includ­ing 260 bird species, the Ben­gal tiger and oth­er threat­ened species such as the estu­ar­ine croc­o­dile and the Indi­an python.