| Characteristic | Number of species |
|---|---|
| Insects | 1,003,469 |
| Flowering Plants | 369,000 |
| Other invertebrates | 230,485 |
| Mushrooms | 157,648 |
| Arachnids | 97,085 |
| Molluscs | 88,244 |
| Crustaceans | 83,263 |
| Fish | 37,288 |
| Mosses | 21,925 |
| Green Algae | 14,550 |
| Reptiles | 12,502 |
| Ferns and Allies | 11,800 |
| Birds | 11,185 |
| Amphibians | 8,918 |
| Red Algae | 7,744 |
| Mammals | 6,819 |
| Corals | 5,672 |
| Brown Algae | 5,005 |
| Gymnosperms | 1,113 |
| Velvet Worms | 220 |
| Horseshoe Crabs | 4 |
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Source
Source
Release date
October 2025
More information
Region
Worldwide
Survey time period
2025
Supplementary notes
IUCN = International Union for Conservation of Nature and Natural Resources.
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