Chilika Lake: ● It is a brackish water lagoon . ● It is spread over the Puri, Khurda, and Ganjam districts of Odisha state on the east coast of India, at the mouth of the Daya River , flowing into theBay of Bengal. ● It covers an area of over 1,100 km. ● It is the largest coastal lagoon in India and the second largest brackish water lagoon in the world after The New Caledonian barrier reef . So, statement 1 is correct. ● It has been listed as a tentative UNESCO World Heritage site. ● In 1981 , Chilika Lake was designated as the first Indian wetland of international importance under the Ramsar Convention due to its rich biodiversity. So, statement 3 is NOT correct. ● It is the largest wintering ground for migratory birds on the Indian sub-continent. So, statement 2 is correct.