French Southern and Antarctic Lands
unique to this
overseas territory of France
include the Amsterdam Albatross (ARKive),
the Kerguelen Pintail (ARKive),
and the Kerguelen Shag (oiseaux.net).
MacGillivray's Prion Pachyptila
is sometimes considered a full species distinct from
the Medium-billed Prion Pachyptila
salvini. The Amsterdam Duck Anas marecula (Google
Books) probably became extinct in the 18th century. Endemic
subspecies include the Europa White-eye (Conservation
Nature), Europa's race of the
White-tailed Tropicbird (Trevor
Hardaker), and the Kerguelen Lesser Sheathbill (Wikimedia
Reptiles restricted to the territory include three species of snake-eyed skinks, all sometimes considered subspecies of more widespread species: Cryptoblepharus bitaeniatus from Europa (Conservation Nature), Cryptoblepharus gloriosus from Glorioso Island (BHL), and Cryptoblepharus caudatus from Juan de Nova Island (p. 22 of TE ME UM pdf file). The other endemic reptiles are the Insular Dwarf Gecko Lygodactylus insularis from Juan de Nova (p. 26 of TE ME UM pdf file), a skink Amphiglossus (or Sepsina) valhallae from Glorioso (fig. 6 at BHL), and another skink Mabuya infralineata from Europa (Conservation Nature) which is sometimes considered a subspecies of Mabuya comorensis (Biodiversity Comores).
Marine fish known only from the French Southern and Antarctic Lands include the Deep-water Spiny Plunderfish Harpagifer spinosus (FishBase), the Kerguelen Sandpaper Skate Bathyraja irrasa (eol), the Sailfish Pike Channichthys velifer (univer.kharkov.ua pdf file), the Big-eyed Icefish Channichthys bospori (FishBase), the Charcoal Icefish Channichthys panticapaei (FishBase), the Red Icefish Channichthys rugosus (FishBase), the Aelita Icefish Channichthys aelitae (FishBase), and another icefish Channichthys richardsoni (Univ. Kharkov pdf file)..
An amphipod crustacean Kergueleniola macra known only from Kerguelen is the sole member of the family Kergueleniolidae (p. 45 of Zootaxa pdf file) while another amphipod from Kerguelen Zaramilla kergueleni (Zootaxa) (BHL) is the sole member of the family Zaramillidae. Arthropods found solely in the Crozet Islands include the weevils Christiansenia dreuxi (Insects on Stamps) and Pachnobium dreuxi (ASEF pdf file), a ground beetle Amblystogenium pacificum (aramel.free.fr), a gnat bug Phtirocoris antarcticus (Insects on Stamps), a non-biting midge Microzetia mirabilis (Insects on Stamps), and an intertidal spider Myro jeanneli (Revue Arachnologique). A pseudoscorpion Diplotemnus insularis (Pseudoscorpions of the World) is known only from Île Saint-Paul. Endemic invertebrates from Europa include the hermit crabs Pagurixus annulus (Crusta) and Pagurixus europa (Zootaxa pdf file), a seastar Aquilonastra chantalae (fr.wikipedia), a termite Neotermes europae (p. 3 of IRD pdf file), a cockroach Elliptorhina lefeuvri (Blattodea Species File), and a leafcutter bee Megachile pauliani (Discover Life). A swimming crab Thalamita pseudospinifera (p. 5 of IRD pdf file) is known only from Glorioso.
The only endemic species of vascular plant are the Lyallia Cushion Lyallia kerguelensis (flickr) (Wikipedia) from Kerguelen and Hypoestes juanensis (CBNM) (JSTOR) from Juan de Nova. A non-vascular plant unique to Kerguelen is a lichen Neuropogon taylori (colnect).
Terrestrial ecoregions in the French Southern and Antarctic Lands include Southern Indian Ocean Islands Tundra (EoE), Amsterdam and Saint-Paul Islands Temperate Grasslands (EoE), and Ile Europa and Bassas da India Xeric Scrub (EoE). A list identifying endemic animals of the French Southern and Antarctic Lands is at (fr.wikipedia).