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Île de la Possession, or Possession Island, formerly Île de la Prise de Possession, is part of the subantarctic Crozet Archipelago.

Île de la Possession
Nickname: Possession Island
Île de la Possession.png
LocationSouth Indian Ocean
Coordinates46°24′S 51°46′E / 46.400°S 51.767°E / -46.400; 51.767
ArchipelagoCrozet Islands
Area150 km2 (58 sq mi)
Length18 km (11.2 mi)
Width13 km (8.1 mi)
Highest elevation934 m (3,064 ft)
Highest pointPic du Mascarin
PopulationNo permanent inhabitants; temporary research station staff only
Illustration of an adult Eaton's Pintail with three ducklings by Keulemans
Eaton’s Pintails inhabit the island
Observation results at Ship Bay, Île de la Possession, published 1893

With an area of 150 km2 (58 sq mi) it is the largest island of the group and the only inhabited one. Administratively, it is part of the French Southern and Antarctic Lands. It is an important nesting site for seabirds.


Île de la Possession lies in the eastern group of the archipelago, about 20 km west of Île de l'Est (East Island). It has a rugged landscape of mountains cut by deep glaciated valleys. The coastal areas and valleys are covered with herbaceous subantarctic vegetation. The island is uninhabited except for the staff of the Alfred Faure research station at the eastern end of the island, with a maximum of about 20 people.[1]

Important Bird AreaEdit

The island has been identified as an Important Bird Area (IBA) by BirdLife International as a breeding site for seabirds, of which there are at least 26 breeding species. Birds nesting in relatively large numbers include king, northern rockhopper and macaroni penguins, wandering, sooty and light-mantled albatrosses, northern giant petrels, medium-billed prions, Kerguelen and soft-plumaged petrels, and South Georgia diving petrels.

Other island breeders in smaller numbers are southern giant petrels, grey-headed albatrosses and Kerguelen terns. Crozet blue-eyed shags, black-faced sheathbills and Eaton's pintails are resident. The smaller birds nest only at higher altitudes because of their vulnerability to rat predation at lower levels.[1]

Other wildlifeEdit

The goats that were introduced have been eradicated, though black rats remain and are a threat to the birdlife. Both Antarctic and subantarctic fur seals, as well as southern elephant seals, breed on the island. A pod of about 80 killer whales inhabits the surrounding waters. Two plants and 59 arthropod species endemic to the archipelago are present.[1]

See alsoEdit


  1. ^ a b c BirdLife International. (2012). Important Bird Areas factsheet: Île de la Possession. Downloaded from on 2012-01-10.

Coordinates: 46°24′S 51°46′E / 46.400°S 51.767°E / -46.400; 51.767