The sanctuary is a part of the mangrove wetland in Andhra Pradesh and are located in the
coastal plain of
Krishna River delta. The Krishna mangroves lie between 15° 2' N and 15° 55' N in latitude and 80° 42'- 81° 01' E in longitude spread across
Krishna and
Guntur districts of Andhra Pradesh. It includes Sorlagondi Reserve Forest, Nachugunta Reserve Forest, Yelichetladibba Reserve Forest, Kottapalem Reserve Forest, Molagunta Reserve Forest, Adavuladivi Reserve Forest and Lankivanidibba Reserve Forest. They occupy the islands of the delta and the adjacent mainlands of Krishna and Guntur districts. A part of the
mangrove forests is located far from the main mangrove area. This unconnected regions lies near
Machilipatnam on its eastern side and
Nakshatranagar on its western side. ==Flora and fauna==