The number of species of living organisms and plants available in a natural region is called bio – diversity.
The situation of Sunderbans: In the eastern part of India, a delta region has been formed by the Ganges river. The Ganges as well as its tributaries have extended their contribution in its. Due to the very mild slope of the Ganges and its tributaries, a deposition of alluvial soil is seen merges before the river enters into, the ocean. The expanse of this delta part is approximately 60000 square km. There are many forests found in this seaward swampy area, which have an abundance of a tree named Sundari. On this basis, this Delta region has been named as Sunderbans.
Bio – diversity in the Sunderbans: Due to swampy and humid conditions in the Sunderbans Delta part, various types of fauna and plant species are found. This is one of the leading areas of the world in terms of bio-diversity. Here, mangrove and tidal vegetation is found. Here the flora and fauna can survive in the mixture of fresh and salt water. The world-famous Royal Bengal Tiger is found in this area. Apart from these, many types of carnivorous and herbivorous creatures are also found in the Sunderbans.