The virtual absence of any introduced pests makes Three Kings a haven for native species, supporting rich habitats, which are home to many special plants and animals found only in New Zealand. The island is strictly a 'no landing zone'.
Motuopao Island is an important refuge, and is strictly a 'no landing zone'.
Simmonds Islands are home to many rare plants, skinks, and a variety of sea and shore birds including breeding Bullers shearwaters. The islands are pest free and strictly 'no landing zones'.
Taranga Island is part of the Hen and Chicken Islands group located off the Whangarei coastline.