Protecting World Heritage sites Aldabra and Vallée de Mai since 1979
Aldabra Atoll hosts about 183,000 adult and sub-adult Aldabra giant tortoises, the highest count on record, according to a five-year study (2018–2022). The population appears stable despite climate pressures and invasive species. Conservationists say continued vigilance and invasive mammal eradication are essential to sustain gains.