The largest surviving patch of Mangrove forests in Andhra Pradesh with more than 65 Mangrove tree species. Home for the rare, endangered Smooth Indian Otter, Fishing Cat, Estuarine Crocodile. The Sanctuary in the estuary of river Godavari supports rich mangrove vegetation with species like Rhizophora, Avicennia, Sonneratia, Aegiceros. FAUNA: Otter, Fishing Cat, Jackal, Marine Turtle and Estuarine Crocodile. Most common birds are Sea Gulls, Storks, Herons, Snipes, Ducks and Flamingos.