- The extremely severe cyclone, Fani, has created four new mouths in Chilika Lake. Chilika Lake is a brackish water lagoon, spread over the Puri, Khurda and Ganjam districts of Odisha.
- It is located at the of the Daya River, flowing into the Bay of Bengal. It is the Asia’s largest brackish water lake.
- In 1981, Chilika Lake was designated the first Indian wetland of international importance under the Ramsar Convention. The Ramsar convention is an international treaty for the conservation and sustainable use of wetlands. It is also known as the Convention on Wetlands. It is named after the city of Ramsar in Iran, where the Convention was signed in 1971.
- Previously, Chilka lake had only two active mouths — the point where it meets the sea. However, in the aftermath of cyclone Fani, four new mouths have opened due to wave energy with high tidal prism.
- According to Chilika Development Authority (CDA) officials, due opening up of new mouths, sea water ingression would increase. This would consequently increase fish migration will increase and the biodiversity will get richer.
- Further, the officials have said that the increase in salinity would not affect the Irrawaddy dolphins. Irrawaddy dolphins are listed as critically endangered in the IUCN Red List.
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