
Ordovician–Silurian
A sudden ice age locked the planet's water into glaciers and drained the shallow seas where almost all life lived. When the ice melted just as fast, the survivors drowned in the rebound.
Biodiversity Intelligence Platform
Real-time intelligence from the IUCN Red List of Threatened Species. Monitoring 12,518 critically endangered, 21,356 endangered, and 20,792 vulnerable species worldwide.
0
Threatened
CR + EN + VU
0
Critical
CR
0
Endangered
EN
0
Vulnerable
VU
Extinction Clock
Based on IUCN assessment rates. Updated daily.
Species added to the endangered list this year
1,578
Newly assessed as Critically Endangered, Endangered, or Vulnerable.
Species with improving status this year
26
Reassessed to a lower-risk category — most often through coordinated conservation action.
Current extinction rate
1,000× the natural background rate
Based on IUCN assessment rates and peer-reviewed background extinction estimates.
Find threatened species near youBrowser location only — no tracking.
Global Overview
Total Threatened
54,666
CR + EN + VU
Critically Endangered
12,518
Highest extinction risk
Endangered
21,356
Very high risk
Vulnerable
20,792
High risk
Declining
47%
25,451 species

Panaque cochliodon
corroncho — classified as VU on the IUCN Red List
Learn more →
Total species classified as threatened per taxonomic group
Growth of IUCN-listed threatened species (CR + EN + VU) by assessment year
Note: Increases partly reflect expanded assessment coverage. Source: IUCN Red List

Earth's Mass Extinctions

A sudden ice age locked the planet's water into glaciers and drained the shallow seas where almost all life lived. When the ice melted just as fast, the survivors drowned in the rebound.

Over millions of years the oceans lost their oxygen. The great reef systems suffocated, and the warm shallow waters that had cradled early marine life turned into dead zones.

Known as the Great Dying. Colossal volcanic eruptions across Siberia poisoned the air and acidified the seas. Nearly all life on Earth vanished — the closest the planet has ever come to sterile.

As the supercontinent tore itself apart, carbon dioxide flooded the atmosphere and temperatures soared. The collapse cleared the stage for the dinosaurs to inherit the Earth.

A city-sized asteroid struck what is now Mexico. Dust and soot blotted out the sun for years, and the 165-million-year reign of the dinosaurs ended in cold and darkness.

For the first time, a single species is the cause. Habitat loss, climate breakdown and exploitation are erasing wildlife up to 1,000 times faster than nature ever did. We are the asteroid.
54,666 species are threatened right now.
The sixth extinction is not a prediction. It is a measurement — tracked species by species, in real time.
Explore threatened speciesSpecies Under Threat
Number of species classified as threatened (CR + EN + VU) on the IUCN Red List, from 2000 to 2025
48,646
threatened species in 2025
+340%
since 2000
11,046
Threatened in 2000
48,646
Threatened in 2025
+37,600
Increase over 25 years
Note: Increases partly reflect expanded assessment coverage, not only worsening status
Source: IUCN Red List
Critically Endangered

Sicyos alba
White bur cucumber faces severe threats from habitat destruction and fragmentation as coastal and wetland areas are converted for development and agriculture. The species' limited distribution and specialized habitat requirements make it particularly vulnerable to environmental changes and human encroachment, with small population sizes increasing extinction risk.

Leucadendron macowanii
The primary threat to Leucadendron macowanii stems from urban expansion and agricultural conversion within its tiny native range, which has eliminated over 80% of its original habitat. Invasive alien plant species, particularly Australian acacias and pines, aggressively colonize the remaining fynbos fragments and outcompete this slow-growing endemic shrub for resources. Altered fire regimes pose an additional critical threat, as both fire suppression and inappropriate burning intervals disrupt the species' natural regeneration cycle, preventing successful seedling establishment.
Anatolichthys transgrediens
Anatolichthys transgrediens faces severe threats from habitat degradation and water extraction in its extremely limited range within Turkey's inland water systems. The species is particularly vulnerable to agricultural water diversions and pollution from agricultural runoff, which alter water chemistry and flow patterns essential for its survival. Climate change-induced drought conditions further exacerbate water scarcity issues, while the species' restricted distribution makes it highly susceptible to localized environmental changes.

Aconitum napellus
Venus' Chariot faces severe population declines due to habitat destruction from agricultural expansion and urban development in its native mountain regions. Over-collection for traditional medicine and ornamental purposes has further depleted wild populations, while climate change threatens the cool, moist conditions this alpine species requires.
Thorius dubitus

Vipera berus
Adder populations face severe pressure from habitat fragmentation as agricultural intensification and urban development destroy the mosaic of heathland, grassland, and woodland edge habitats essential for their survival. Climate change poses a particularly acute threat to this cold-adapted species, with warming temperatures disrupting hibernation patterns and shifting suitable habitat northward faster than populations can naturally disperse. Human persecution remains a significant factor, as fear-driven killing continues despite the species' generally docile nature and important ecological role.
Most At Risk
Classification
SpeciesRadar tracks species assessed as threatened (CR + EN + VU) by the IUCN Red List. Additional categories are included where available from national red list sources.
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Data sourced from the IUCN Red List of Threatened Species and the Global Biodiversity Information Facility (GBIF). Methodology · Citation guide