This booklet outlines the need and purpose of the Sundarban Biosphere Reserve in West Bengal, India. ‘Sunderabans’ the largest delta on globe in the estuarine phase of the river Ganges s a unique bioclimatic zone in a typical geographical situation in the coastal region of Bay of Bengal. The booklet contains information on the location, socio-economic status of people, administrative measures and projects being undertaken in the biosphere reserve region.