Heard Island and McDonald Islands vs Mayotte: Protected area coverage of marine key biodiversity areas
Heard Island and McDonald Islands
100.0%
in 2025
Mayotte
90.9%
in 2025
Heard Island and McDonald Islands rank
1st
Mayotte rank
19th
Protected area coverage of marine key biodiversity areas over time
- Heard Island and McDonald Islands
- Mayotte
How they compare
Heard Island and McDonald Islands currently reports 100.0% against 90.9% in Mayotte, a difference of 9.1%.
That makes Heard Island and McDonald Islands's figure about 1.1 times Mayotte's.
Across all 26 years both countries report, Heard Island and McDonald Islands has been ahead every year.
Heard Island and McDonald Islands ranks 1st and Mayotte ranks 19th of 190 countries.
Heard Island and McDonald Islands has averaged higher in every one of the 3 decades both report.
Head to head by decade
| Decade | Heard Island and McDonald Islands | Mayotte | Difference | Ahead |
|---|---|---|---|---|
| 2000s | 100.0% | 45.7% | 54.3% | Heard Island and McDonald Islands |
| 2010s | 100.0% | 90.4% | 9.6% | Heard Island and McDonald Islands |
| 2020s | 100.0% | 90.9% | 9.1% | Heard Island and McDonald Islands |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher protected area coverage of marine key biodiversity areas, Heard Island and McDonald Islands or Mayotte?
- Heard Island and McDonald Islands, at 100.0% against 90.9% in Mayotte as of 2025.
- What is the difference in protected area coverage of marine key biodiversity areas between Heard Island and McDonald Islands and Mayotte?
- 9.1%, with Heard Island and McDonald Islands ahead.
- How many years of comparable data are there for Heard Island and McDonald Islands and Mayotte?
- 26 years are reported by both, from 2000 to 2025.
- How do Heard Island and McDonald Islands and Mayotte rank globally for protected area coverage of marine key biodiversity areas?
- Heard Island and McDonald Islands ranks 1st and Mayotte ranks 19th of 190 countries.
- Where does this data come from?
- BirdLife International, IUCN and UNEP-WCMC – processed by Our World in Data, published as Protected area coverage of marine key biodiversity areas. Statizoid refreshes it automatically from the source and publishes the full history for both places.
Individual pages
About this data
Average proportion of Marine Key Biodiversity Areas (KBAs) covered by protected areas (%).