<Tr> <Th> Official name </Th> <Td> Sundarbans Reserved Forest </Td> </Tr> <Tr> <Th> Designated </Th> <Td> 21 May 1992 </Td> </Tr> <P> The Sundarbans is a vast forest in the coastal region of the Bay of Bengal and considered one of the natural wonders of the world . Located in the delta region of Padma, Meghna and Brahmaputra river basins, this unique forest extends across Khulna, Satkhira, Bagerhat districts of Bangladesh and South 24 Parganas, North 24 Parganas districts of West Bengal, India . The Sundarbans contain the world's largest coastal mangrove forest, with an area of about 10,000 km (3,900 sq mi), of which about 6,000 km (2,300 sq mi) are located in Bangladesh and about 4,000 km (1,500 sq mi) in India . The Bangladeshi and Indian parts of the Sundarbans, while in fact adjacent parts of the uninterrupted landscape, have been listed separately in the UNESCO World Heritage List: as The Sundarbans and Sundarbans National Park, respectively . The Bangladeshi part encompasses three wildlife sanctuaries, viz Sundarbans West Wildlife Sanctuary, Sundarbans South Wildlife Sanctuary and Sundarbans East Wildlife Sanctuary, and is recognized as a Ramsar site named Sundarbans Reserved Forest . </P> <P> The Sundarbans is a network of marine streams, mud shores and mangrove forests . The salinity level is higher in the mangroves than in the freshwater swamp forests located further inland . The Sundarbans flora is characterised by the abundance of sundari, gewa, goran and keora all of which occur prominently throughout the area . The region is also known to contain numerous wildlife species, birds and reptiles, including Bengal tiger, chital, crocodile, snakes many of which are considered endangered . Despite a total ban on all killing or capture of wildlife other than fish and some invertebrates, it appears that there is a consistent pattern of depleted biodiversity or loss of species in the 20th century, and that the ecological quality of the forest is declining . </P>

Where is the worlds largest single block of tidal halophytic mangrove forest located
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