Established in 1978 in twenty four Paraganas district, Sunderbans Tiger reserve is spread over an area of  2608 sq. kms. Sixty percent of the demarcated area of the Sunderbans sprawling actually over 9630sq.km, is in Bangladesh. The national park with a core area of 1330sq.km, has been designated as a World Heritage Site in 1985 and is a part of the Project Tiger. The Sunderbans has three wildlife sanctuaries at Sajnekhali, Lothian Island and Haliday Island..