St. Helena

272 threatened species · Biodiversity Intelligence Dashboard

Threatened Species

272

CR + EN + VU

Critically Endangered

118

Highest risk

Endangered

106

Very high risk

Vulnerable

48

High risk

Declining

47%

127 species

Category Breakdown
CR 118
EN 106
VU 48
CR: 118
EN: 106
VU: 48

Critically Endangered

11843%

Extremely high risk of extinction in the wild.

Endangered

10639%

Very high risk of extinction in the wild.

Vulnerable

4818%

High risk of extinction in the wild.

Threatened total — 272 species

Species by Group
🦗

insects

152

152 threatened

🌱

plants

45

45 threatened

🕷️

arachnids

31

31 threatened

🐦

birds

17

17 threatened

🐟

fishes

12

12 threatened

🦀

crustaceans

6

6 threatened

🪱

other invertebrates

5

5 threatened

🐚

molluscs

3

3 threatened

🐾

mammals

1

1 threatened

🐢

reptiles

1

1 threatened

🍄

fungi

1

1 threatened

Global Share

0.49%

of globally threatened species

Country Rank

#109

of 248 countries

Endemic Threatened

221

Found only here

Top Threats
1.Invasive non-native/alien species/diseases240 species
2.Habitat shifting & alteration153 species
3.Logging & wood harvesting38 species
4.Garbage & solid waste25 species
5.Housing & urban areas24 species
6.Livestock farming & ranching22 species
7.Fishing & harvesting aquatic resources17 species
8.Recreational activities10 species

How to Cite

IUCN: IUCN (2025). The IUCN Red List of Threatened Species. Version 2025-1. Available at: https://www.iucnredlist.org. doi:10.2305/IUCN.UK.2025-1.RLTS

GBIF: GBIF.org (2025). GBIF Home Page. Available at: https://www.gbif.org

This page: SpeciesRadar (2026). St. Helena: Biodiversity Dashboard. SpeciesRadar: Intelligence for Earth's Biodiversity. Available at: https://speciesradar.org/countries/SH

Species counts reflect IUCN Red List threatened categories (CR, EN, VU). · Full citation guide & data usage terms

Frequently asked questions

How many threatened species are in St. Helena?
St. Helena has 272 threatened species recorded on SpeciesRadar — 118 of those are Critically Endangered, facing an extremely high risk of extinction. The figures combine IUCN Red List data with national red list assessments where available.
How many Critically Endangered, Endangered, and Vulnerable species does St. Helena have?
Of the 272 threatened species in St. Helena, 118 are Critically Endangered, 106 are Endangered, and 48 are Vulnerable. Together these three IUCN Red List categories make up the "threatened" total.
What is the most endangered species in St. Helena?
Among the 118 Critically Endangered species in St. Helena, Dwarf ebony (Trochetiopsis ebenus) is one of the most at-risk — featured prominently on the country dashboard. The full list of Critically Endangered species is filterable on the Species tab.
What protected areas exist in St. Helena?
SpeciesRadar does not yet catalogue protected areas for St. Helena. Where available, protected-area data is drawn from the World Database on Protected Areas (WDPA) and national designations.
Which animal and plant groups are most threatened in St. Helena?
The most affected groups in St. Helena, by number of threatened species, are insects (152), plants (45), and arachnids (31). The full taxonomic breakdown is shown on the country dashboard.
What are the biggest threats to wildlife in St. Helena?
The leading threats to threatened species in St. Helena are invasive non-native/alien species/diseases, habitat shifting & alteration, logging & wood harvesting, and garbage & solid waste. Each threat is mapped to the species it affects in the country's threat breakdown.
How many threatened species are found only in St. Helena?
St. Helena has 221 threatened species that are endemic — found nowhere else on Earth. Because their entire global population depends on this one country, they are especially vulnerable to local habitat loss.
How many of St. Helena's threatened species have declining populations?
127 of St. Helena's threatened species have populations that are still declining. Reversing these trends is the central focus of the conservation work the country dashboard tracks.
How does St. Helena compare to other countries for threatened species?
St. Helena ranks #109 of 248 countries by number of threatened species, and accounts for roughly 0.49% of all threatened species tracked worldwide. Threat is geographically concentrated, so a high rank reflects both rich biodiversity and intense pressure on it.
Where does the data for St. Helena come from, and can I download it?
SpeciesRadar draws on the IUCN Red List, the Global Biodiversity Information Facility (GBIF), the World Database on Protected Areas, and national red lists. Every table on the St. Helena profile — species, national red list, and protected areas — can be downloaded as a CSV spreadsheet or a branded PDF report.