The Outer Islands or Coralline Seychelles (archipelago) is a collective term for those islands of the Seychelles that are not on the shallow Seychelles Bank (Seychelles Plateau) which defines the location of the granitic Inner Islands archipelago to the east. The local Seychellois Creole name for the outer islands is Zil Elwannyen Sesel, while the French name is Îles Eloignées. They are all of coral formation, and in the western Indian Ocean.
Until 2008, the islands were outside the administrative and electoral Districts of Seychelles. in 2008 the shrimp farm closed on Coëtivy Island which caused a wave of job-seekers coming to Mahé. The ministry of tourism was granted a free hand on these islands in order to settle down the unrest of the population, and declared it a district. It formed the IDC to control the islands, and prepared a program called 1 hotel 1 island. Each island in the group should be leased to a hotel, which will in turn built several residential homes and facilities on those islands. It required removal of the PA from the islands. At first finding hotel chains was difficult, so Coëtivy received a prison, and thus creating jobs for the people who came back to their island. Other islands received questionable facilities as well, e.g. Marie Louise Island a jail, Assumption Island an Army base, but on other islands had developments of resorts. The population increased again, for the first time in a century, from 500 in 2008 to 700 in 2016. Conservation in the outer islands is managed by Island Conservation Society. The Save Our Seas Foundation manages the nature preserve of D'Arros Island and its neighboring atolls.
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