The lagoon and the surrounding land comprising 139 hectares ( 340 acres ) form part of the Wamberal Lagoon Nature Reserve that is under management of the NSW National Parks & Wildlife Service .
The Wamberal Lagoon Nature Reserve is a nature reserve created in 1981 .
The lagoon and the surrounding land comprising 139 hectares ( 340 acres ) form part of the Wamberal Lagoon Nature Reserve , a nature reserve created in 1981 , that is under management of the NSW National Parks & Wildlife Service .