<Tr> <Th> Designated </Th> <Td> 1 October 1981 </Td> </Tr> <Tr> <Th> Reference no . </Th> <Td> 229 </Td> </Tr> <P> Chilika Lake is a brackish water lagoon, 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 the Bay of Bengal, covering an area of over 1,100 km . It is the largest coastal lagoon in India and the second largest coastal lagoon in the world after The New Caledonian barrier reef in New Caledonia . </P> <P> It is the largest wintering ground for migratory birds on the Indian sub-continent . The lake is home to a number of threatened species of plants and animals . </P>

Name the largest lagoon of india and the state where it is found
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