World Heritage Identification Number: 261
World Heritage since: 1983
Category: Natural Heritage
WHE Type: Protected Areas & National Parks
Transboundary Heritage: No
Endangered Heritage: No
Country: 🇸🇨 Seychelles
Continent: Africa
UNESCO World Region: Africa
Map
A Glimpse into the Enchanting Vallée de Mai Nature Reserve
The Vallée de Mai Nature Reserve, nestled within the idyllic island of Praslin in the Seychelles archipelago, presents a captivating tableau of pristine beauty and biodiversity that has earned it the distinction of being a UNESCO World Heritage Site since 1983. This enchanted valley offers a rare glimpse into the untouched splendor of a near-original palm forest, where the majestic coco de mer, the largest seed in the plant kingdom, reigns supreme.
More to come…UNESCO Description of the World Heritage Site
In the heart of the small island of Praslin, the reserve has the vestiges of a natural palm forest preserved in almost its original state. The famous coco de mer, from a palm-tree once believed to grow in the depths of the sea, is the largest seed in the plant kingdom.
UNESCO Justification of the World Heritage Site
Criterion (vii): The property contains a scenic mature palm forest. The natural formations of the palm forests are of aesthetic appeal with dappled sunlight and a spectrum of green, red and brown palm fronds. The natural beauty and near-natural state of the Vallée de Mai are of great interest, even to those visitors who are not fully aware of the ecological significance of the forest.
Criterion (viii): Shaped by geological and biological processes that took place millions of years ago, the property is an outstanding example of an earlier and major stage in the evolutionary history of the world's flora. Its ecology is dominated by endemic palms, and especially by the coco-de-mer, famous for its distinctively large double nut containing the largest seed in the plant kingdom. The Vallée de Mai constitutes a living laboratory, illustrating of what other tropical areas would have been before the advent of more advanced plant families.
Criterion (ix): The property represents an outstanding example of biological evolution dominated by endemic palms. The property's low and intermediate-altitude palm forest is characteristic of the Seychelles and is preserved as something resembling its primeval state. The forest is dominated by the coco-de-mer Lodoicea maldivica but there are also five other endemic species of palms. Located in the granitic island of Praslin, the Vallée de Mai is the only area in the Seychelles where all six species occur together and no other island in the Indian Ocean possesses the combination of features displayed in the property. The ancient palms form a dense forest, along with Pandanus screw palms and broadleaf trees, which together constitute an ecosystem where unique ecological processes and interactions of nutrient cycling, seed dispersal, and pollination occur.
Criterion (x): The Vallée de Mai is the world's stronghold for the endemic coco-de-mer (Lodoicea maldivica )and the endemic palm species millionaire's salad (Deckenia nobilis ), thief palm (Phoenicophorium borsigianum ), Seychelles stilt palm (Verschaffeltia splendida) latanier millepattes (Nephrosperma vanhoutteanum) and latanier palm (Roscheria melanochaetes), are also found within the property. The palm forest is relatively pristine and it provides a refuge for viable populations of many endemic species, including the black parrot (Coracopsis nigra barklyi), restricted to Praslin Island and totally dependent on the Vallée de Mai and surrounding palm forest. Other species supported by the palm habitat include three endemic species of bronze gecko, endemic blue pigeons, bulbuls, sunbirds, swiftlets, Seychelles skinks, burrowing skinks, tiger chameleons, day geckos, caecilians, tree frogs, freshwater fish and many invertebrates.
Encyclopedia Record: Vallée de Mai
Vallée de Mai Nature Reserve is a nature park and UNESCO World Heritage Site on the island of Praslin, Seychelles. It consists of a well-preserved palm forest, flagship species made up of the island endemic coco de mer, as well as five other endemic palms.Additional Site Details
Area: 19.5 hectares
Number of Components: 1
(viii) — Outstanding example representing major earth stages
(ix) — Outstanding example representing ecological and biological processes
(x) — Contains most important habitats for biodiversity
Coordinates: -4.331 , 55.738
IUCN World Heritage Outlook
The 2025 Conservation Outlook on Vallée de Mai Nature Reserve reports the following assessment:
Source: International Union for Conservation of Nature (IUCN) · View assessment
Image
© Unknown, CC BY-SA 3.0 Resized from original. (This derivative is under the same CC BY-SA license.)
