The Sundarbans region is one of the richest ecosystems in the world. The region contains arguably the world’s largest remaining area of mangroves, and is known for its exceptional biodiversity, including numerous threatened species such as the emblematic Royal Bengal tiger and several species of river dolphin. About 40 percent of the nearly 10,000 square kilometers (km2) of the Sundarbans forest lies within West Bengal; the rest is in Bangladesh.
The forests of the Sundarbans form a powerful natural barrier that protects Kolkata Metropolitan Region’s roughly 14 million inhabitants and other human settlements from cyclones, rising sea tides, and other adverse natural events that otherwise would have taken a massive toll on human life and property.
Sundarbans demography as per Census 2011
Note: TP – Total Persons, TM- Total Male, TF – Total Female, TSC – Total Scheduled Castes, TST – Total Scheduled Tribes
Source - Department of Sundarban Affairs, Govt. of W.B.