11/10/2026
Scientists Have Discovered An Extraordinary Concentration Of Giant Tortoises On A Single Seychelles Island, Highlighting The Remarkable Wildlife That Can Thrive In Isolated Ecosystems. 🐢🌴
The Seychelles Is Famous For Its Giant Tortoises, Some Of Which Can Live For More Than 100 Years. These Slow-Moving Reptiles Play An Important Ecological Role By Grazing On Vegetation, Dispersing Seeds And Helping Shape The Island Habitats They Inhabit.
A New Scientific Survey By The Seychelles Islands Foundation And The University Of Exeter Estimates That Approximately 180,000 Aldabra Giant Tortoises Live On Aldabra Atoll, A Remote UNESCO World Heritage Site In The Indian Ocean. The Study, Published In Ecology And Evolution In 2026, Analyzed Five Years Of Population Monitoring Data Collected Between 2018 And 2022. 🐢
The Number Is Remarkable Because Earlier Estimates Put The Population At Around 100,000. Researchers Say The New Figure Does Not Necessarily Mean The Population Has Suddenly Exploded; Improved Survey Methods Helped Account For Tortoises That Were Previously Missed, Particularly In Dense Vegetation. The Population Appears To Have Remained Relatively Stable At This Much Higher Level.
Aldabra’s Giant Tortoises Were Once Heavily Exploited, With Historical Accounts Suggesting Their Numbers Fell To Fewer Than 1,000 During The 19th Century. Decades Of Protection, Habitat Conservation And Long-Term Scientific Monitoring Have Helped Safeguard The Species, Making Aldabra Home To The Largest Free-Roaming Population Of Giant Tortoises In The World.
These Tortoises Are Also Important To The Ecosystem. As They Feed And Move Across The Atoll, They Shape Vegetation, Disperse Seeds And Help Maintain Ecological Processes. Scientists Describe Them As Ecosystem Engineers Because Their Activities can influence the wider habitat and the other species living there.
Despite This Conservation Success, Challenges Remain. Climate Change, Rising Sea Levels And Invasive Animals Such As Rats And Feral Cats Can Threaten Eggs And Young Tortoises. Continued Monitoring And Habitat Protection Will Be Essential To Ensure That This Extraordinary Population Survives For Generations To Come. 🌍
Sources: University Of Exeter, Seychelles Islands Foundation, Ecology And Evolution, Seychelles News Agency, The Guardian.