sprep-pa
SNA stands for Significant Natural Area and they are pretty important whichever way you look at them. Forest and Bird says they are "New Zealand's most important remnants of native habitat - places where rare or threatened plants or animals are still found". The Resource Management Act (RMA) 1991 Section 6 requires that they are protected. It refers to "the protection of areas of significant indigenous vegetation and significant habitats of indigenous fauna" - or SNAs.