Explanation: Chilka Lake, located in the state of Odisha, India, is the largest saltwater lake in the country. It is a brackish water lagoon and is recognized as a significant wetland ecosystem. The lake is renowned for its rich biodiversity, particularly its importance as a habitat for migratory birds. Every year, thousands of migratory birds from various parts of the world, including Europe, Central Asia, and the Himalayas, visit Chilka Lake. This makes it a crucial site for ornithologists and bird watchers.
Chilka Lake is not only a natural wonder but also a protected wildlife sanctuary. The Chilka Wildlife Sanctuary was established to conserve the lake's ecosystem and its diverse flora and fauna. The sanctuary covers a vast area and includes the lake and its surrounding wetlands. The lake's unique ecosystem supports a wide variety of aquatic life, including fish, crustaceans, and mollusks, which in turn attract a large number of birds.
The migratory birds that visit Chilka Lake include species such as flamingos, pelicans, spoonbills, and various types of ducks and waders. The lake's importance for migratory birds is recognized internationally, and it is designated as a Ramsar site, which means it is a wetland of international importance under the Ramsar Convention.
It is important to note that while other national parks and wildlife sanctuaries in India, such as Keoladeo Ghana National Park in Rajasthan and Manas National Park in Assam, are also significant for their wildlife, they do not fit the specific criteria of being the largest saltwater lake in Odisha. Ranthambore National Park, known for its tiger population, is also not a saltwater lake.
In conclusion, Chilka Wildlife Sanctuary is the correct answer because it is the largest saltwater lake in Odisha and is a critical habitat for migratory birds, making it a unique and important site for conservation and biodiversity.