- It is wildlife sanctuary and estuary located in Andhra Pradesh.
- It is one of rarest eco-regions of world because it harbour’s vast tracts of pristine mangrove forests.
- It is believed to be one of last remaining tracts of thick primary mangrove forests of South India.
- It covers area of 194.81 km2 and is spread across Krishna and Guntur districts of Andhra Pradesh.
- The estuary of Krishna River passes through it.
- It is believed that this region potentially holds one most significant populations of fishing cats in the world.