Nauru

7 threatened species · Biodiversity Intelligence Dashboard

Threatened Species

7

CR + EN + VU

Critically Endangered

1

Highest risk

Endangered

3

Very high risk

Vulnerable

3

High risk

Declining

100%

7 species

Category Breakdown
CR 1
EN 3
VU 3
CR: 1
EN: 3
VU: 3

Critically Endangered

114%

Extremely high risk of extinction in the wild.

Endangered

343%

Very high risk of extinction in the wild.

Vulnerable

343%

High risk of extinction in the wild.

Threatened total — 7 species

Species by Group
🐦

birds

2

2 threatened

🐟

fishes

2

2 threatened

🪱

other invertebrates

1

1 threatened

🪸

corals

1

1 threatened

🦀

crustaceans

1

1 threatened

Global Share

0.01%

of globally threatened species

Country Rank

#245

of 250 countries

Endemic Threatened

0

Found only here

Top Threats
1.Habitat shifting & alteration6 species
2.Fishing & harvesting aquatic resources5 species
3.Invasive non-native/alien species/diseases4 species
4.Logging & wood harvesting3 species
5.Hunting & trapping terrestrial animals3 species
6.Recreational activities3 species
7.Roads & railroads2 species
8.Storms & flooding2 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). Nauru: Biodiversity Dashboard. SpeciesRadar: Intelligence for Earth's Biodiversity. Available at: https://speciesradar.org/countries/NR

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 Nauru?
Nauru has 7 threatened species recorded on SpeciesRadar — 1 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 Nauru have?
Of the 7 threatened species in Nauru, 1 are Critically Endangered, 3 are Endangered, and 3 are Vulnerable. Together these three IUCN Red List categories make up the "threatened" total.
What is the most endangered species in Nauru?
Among the 1 Critically Endangered species in Nauru, Black Teatfish (Holothuria nobilis) 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 Nauru?
SpeciesRadar does not yet catalogue protected areas for Nauru. 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 Nauru?
The most affected groups in Nauru, by number of threatened species, are birds (2), fishes (2), and other invertebrates (1). The full taxonomic breakdown is shown on the country dashboard.
What are the biggest threats to wildlife in Nauru?
The leading threats to threatened species in Nauru are habitat shifting & alteration, fishing & harvesting aquatic resources, invasive non-native/alien species/diseases, and logging & wood harvesting. Each threat is mapped to the species it affects in the country's threat breakdown.
How many of Nauru's threatened species have declining populations?
7 of Nauru'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 Nauru compare to other countries for threatened species?
Nauru ranks #245 of 250 countries by number of threatened species, and accounts for roughly 0.01% 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 Nauru 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 Nauru profile — species, national red list, and protected areas — can be downloaded as a CSV spreadsheet or a branded PDF report.