The Sundarbans is a cluster of low-lying islands in the Bay of Bengal, spread across India and Bangladesh, famous for its unique mangrove forests. This active delta region is among the largest in the world, measuring about 40,000 sq. km. Sunderban has extremely rich diversity of aquatic and terrestrial flora and fauna. In fact, Sundarbans's highly productive ecosystem acts as a natural fish nursery.
Although the region is situated south of the Tropic of Cancer, the temperature is equable due to its proximity to the sea. Average annual maximum temperature is around 35oC . Average annual rainfall is 1920 mm. The Biogeography of Sunderban is unique and the region harbors a rich diversity in terms of species content, ecosystem and habitat types. This deltic ecosystem, which is the single largest continuous area in the world for threatened Bengal Tiger and largest contiguous mangrove-patch on globe (along with Bangladesh), is very productive and well known for its greater degree or specialization. Sunderban is the larges mangal diversity of the planet (81 plant and 1586 animal species.)
