The estimated population is 80,000 in 1998. The coralline islands are low averaging 1.5 meters above sea level and seldom exceed 9 to 15 meters in height Supplies of fresh water are scarce and settlements are small with rarely more than a hundred people. Many of these islands serve as rookeries for large bird population. In contrast the granitic islands rise from the sea to altitudes of 600 to 1000m. The topography is rugged with outcrops ofhuge boulders.
Fresh water is provided by surface streams.
Most islands are covered in luxuriant and verdant vegetation. White sandy beaches surrounding the islands are natural features of the Seychelles archipelago.