IUCN = International Union for Conservation of Nature and Natural Resources.
Organisms on the Red List are those categorized as: Critically Endangered (CR), Endangered (EN) or Vulnerable (VU).
In 2025, around 767000 species of vertebrates were known and nearly 11,500 were endangered to become extinct. Furthermore, there were over 426,000 plants discovered around the world of which 29,748 were endangered.
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IUCN. (October 10, 2025). Number of species discovered in the world and the number of species on the Red List of Threatened Species in 2025, by type of organism [Graph]. In ÌÇÐÄÆƽâ°æ. Retrieved July 24, 2026, from /statistics/264679/biodiversity-species-on-the-red-list/
IUCN. "Number of species discovered in the world and the number of species on the Red List of Threatened Species in 2025, by type of organism." Chart. October 10, 2025. ÌÇÐÄÆƽâ°æ. Accessed July 24, 2026. /statistics/264679/biodiversity-species-on-the-red-list/
IUCN. (2025). Number of species discovered in the world and the number of species on the Red List of Threatened Species in 2025, by type of organism. ÌÇÐÄÆƽâ°æ. ÌÇÐÄÆƽâ°æ Inc.. Accessed: July 24, 2026. /statistics/264679/biodiversity-species-on-the-red-list/
IUCN. "Number of Species Discovered in The World and The Number of Species on The Red List of Threatened Species in 2025, by Type of Organism." ÌÇÐÄÆƽâ°æ, ÌÇÐÄÆƽâ°æ Inc., 10 Oct 2025, /statistics/264679/biodiversity-species-on-the-red-list/
IUCN, Number of species discovered in the world and the number of species on the Red List of Threatened Species in 2025, by type of organism ÌÇÐÄÆƽâ°æ, /statistics/264679/biodiversity-species-on-the-red-list/ (last visited July 24, 2026)
Number of species discovered in the world and the number of species on the Red List of Threatened Species in 2025, by type of organism [Graph], IUCN, October 10, 2025. [Online]. Available: /statistics/264679/biodiversity-species-on-the-red-list/
