The park is comprised of North Wyrrabalong (north of The Entrance), South Wyrrabalong (south of The Entrance) and four islands within Tuggerah Lake (Pelican Island, Terilbah Island and two unnamed islands known locally as Bird Islands).
The park conserves the largest stands of littoral rainforest and Sydney red gums on the NSW Central Coast as well as significant freshwater wetlands. It also contains six endangered ecological communities, significant habitat for a number of threatened animal species and a variety of Aboriginal sites, including an extensive midden at Pelican Point.
