The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Animals (36 members)
- Animals (Marine Mammals) (36 members)
- Bees and Wasps (33 members)
- Birds (Land and Estuaries) (123 members)
- Birds (Shore and Seabirds) (65 members)
- Botanical terms (4 members)
- Butterflies (28 members)
- Categories of science projects for teachers (9 members)
- Caterpillars (25 members)
- CitSci Wiki (4 members)
- Citizen Science Projects (48 members)
- Citizen Science Projects/Guide for teachers to science projects (2 members)
- Citizen Science Projects/Plastics and pollution (0 members)
- Climate, weather and the atmosphere (5 members)
- Cultivars (6 members)
- Curious Minds (29 members)
- Extension templates (2 members)
- Ferns (82 members)
- Fish (Freshwater Exotics) (12 members)
- Fish (New Zealand Freshwater) (8 members)
- Flies (112 members)
- Friends of Te Henui (0 members)
- Fungi (189 members)
- Geographic Information - systems and datasets (8 members)
- Grasses, Sedges and Rushes (76 members)
- Guide for teachers to science projects (3 members)
- Hebes (133 members)
- Imported vocabulary (8 members)
- Insects (295 members)
- Invertebrates (Freshwater) (29 members)
- Lichens, Algae and Diatoms (31 members)
- Liverworts (5 members)
- Living World (7 members)
- Logo (1 member)
- Mosses (24 members)
- Mosses (Club) (5 members)
- Moths (149 members)
- News (2 members)
- Orchids (23 members)
- Pages with broken file links (12 members)
- Phil Bendle Collection (3,241 members)
- Plants (15 members)
- Plants (Exotic) (126 members)
- Plants (Native) (234 members)
- Project information (30 members)
- Reptiles (59 members)
- Resources (34 members)
- Resources/Botanical terms (1 member)
- Resources/Living World (0 members)
- Snails, Slugs and Worms (40 members)
