American Samoa

87 threatened species · Biodiversity Intelligence Dashboard

Threatened Species

87

CR + EN + VU

Critically Endangered

3

Highest risk

Endangered

51

Very high risk

Vulnerable

33

High risk

Declining

77%

67 species

Category Breakdown
EN 51
VU 33
CR: 3
EN: 51
VU: 33

Critically Endangered

33%

Extremely high risk of extinction in the wild.

Endangered

5159%

Very high risk of extinction in the wild.

Vulnerable

3338%

High risk of extinction in the wild.

Threatened total — 87 species

Species by Group
🪸

corals

55

55 threatened

🐟

fishes

12

12 threatened

🦗

insects

5

5 threatened

🌱

plants

5

5 threatened

🐦

birds

3

3 threatened

🐢

reptiles

3

3 threatened

🐚

molluscs

3

3 threatened

🐾

mammals

1

1 threatened

Global Share

0.16%

of globally threatened species

Country Rank

#186

of 253 countries

Endemic Threatened

6

Found only here

Top Threats
1.Fishing & harvesting aquatic resources55 species
2.Habitat shifting & alteration55 species
3.Invasive non-native/alien species/diseases51 species
4.Annual & perennial non-timber crops48 species
5.Type Unknown/Unrecorded (pollution)47 species
6.Problematic native species/diseases46 species
7.Recreational activities42 species
8.Agricultural & forestry effluents39 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). American Samoa: Biodiversity Dashboard. SpeciesRadar: Intelligence for Earth's Biodiversity. Available at: https://speciesradar.org/countries/AS

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 American Samoa?
American Samoa has 87 threatened species recorded on SpeciesRadar — 3 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 American Samoa have?
Of the 87 threatened species in American Samoa, 3 are Critically Endangered, 51 are Endangered, and 33 are Vulnerable. Together these three IUCN Red List categories make up the "threatened" total.
What is the most endangered species in American Samoa?
Among the 3 Critically Endangered species in American Samoa, Walking Maidenhair Fern (Adiantum philippense) 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 American Samoa?
SpeciesRadar does not yet catalogue protected areas for American Samoa. 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 American Samoa?
The most affected groups in American Samoa, by number of threatened species, are corals (55), fishes (12), and insects (5). The full taxonomic breakdown is shown on the country dashboard.
What are the biggest threats to wildlife in American Samoa?
The leading threats to threatened species in American Samoa are fishing & harvesting aquatic resources, habitat shifting & alteration, invasive non-native/alien species/diseases, and annual & perennial non-timber crops. Each threat is mapped to the species it affects in the country's threat breakdown.
How many threatened species are found only in American Samoa?
American Samoa has 6 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 American Samoa's threatened species have declining populations?
67 of American Samoa'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 American Samoa compare to other countries for threatened species?
American Samoa ranks #186 of 253 countries by number of threatened species, and accounts for roughly 0.16% 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 American Samoa 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 American Samoa profile — species, national red list, and protected areas — can be downloaded as a CSV spreadsheet or a branded PDF report.