{"id":1132536,"name":"Extinct in the wild (EW) species","unit":"species","createdAt":"2026-01-06T08:36:44.000Z","updatedAt":"2026-01-06T08:36:44.000Z","coverage":"","timespan":"2025-2025","datasetId":7304,"shortUnit":"","columnOrder":0,"shortName":"ew","catalogPath":"grapher/iucn/2026-01-05/iucn_number_each_status/iucn_number_each_status#ew","descriptionShort":"The total number of species that have been classified as extinct in the wild by the IUCN Red List.","descriptionFromProducer":"A taxon is Extinct In The Wild (EW) when it is known only to survive in cultivation, in captivity or as a naturalized population (or populations) well outise the past range. A taxon is presumed Extinct In The Wild  when exhaustive surveys in known and/or expected habitat, at appropriate times (diurnal, seasonal, annual), throughout its historic range have failed to record an individual. Surveys should be over a time frame appropriate to the taxon’s life cycle and life form.","type":"int","datasetName":"Number of species in each IUCN Red List Category by kingdom and class.","updatePeriodDays":365,"datasetVersion":"2026-01-05","nonRedistributable":false,"display":{"unit":"species","numDecimalPlaces":0},"schemaVersion":2,"presentation":{"topicTagsLinks":["Biodiversity"]},"dimensions":{"years":{"values":[{"id":2025}]},"entities":{"values":[{"id":84190,"name":"All species","code":null},{"id":84169,"name":"Amphibians","code":null},{"id":84175,"name":"Arachnids","code":null},{"id":84167,"name":"Birds","code":null},{"id":371178,"name":"Brachiopods","code":null},{"id":84188,"name":"Brown algae","code":null},{"id":371183,"name":"Calcareous sponges","code":null},{"id":371155,"name":"Centipedes","code":null},{"id":372373,"name":"Charophyceae","code":null},{"id":371180,"name":"Clitellata","code":null},{"id":84173,"name":"Crustaceans","code":null},{"id":371156,"name":"Demosponges","code":null},{"id":84170,"name":"Fishes","code":null},{"id":51342,"name":"Fungi","code":null},{"id":372372,"name":"Glass sponges","code":null},{"id":84177,"name":"Horseshoe crabs","code":null},{"id":371165,"name":"Hydrozoans","code":null},{"id":84172,"name":"Insects","code":null},{"id":84166,"name":"Mammals","code":null},{"id":371173,"name":"Millipedes","code":null},{"id":51352,"name":"Molluscs","code":null},{"id":51340,"name":"Plants","code":null},{"id":371170,"name":"Polychaete","code":null},{"id":84168,"name":"Reptiles","code":null},{"id":371166,"name":"Ribbon worms","code":null},{"id":371157,"name":"Sea anemones and corals","code":null},{"id":371160,"name":"Sea cucumbers","code":null},{"id":371168,"name":"Sea urchins","code":null},{"id":371182,"name":"Springtails","code":null},{"id":371181,"name":"Starfish","code":null},{"id":371169,"name":"Turbellaria","code":null},{"id":371161,"name":"Udeonychophora","code":null}]}},"origins":[{"id":10730,"title":"Number of species in each IUCN Red List Category by kingdom and class.","producer":"IUCN Red List of Threatened Species","citationFull":"IUCN. 2025. The IUCN Red List of Threatened Species. Version 2025-1. https://www.iucnredlist.org. Accessed on 9th September 2025.","attributionShort":"IUCN","urlMain":"https://www.iucnredlist.org/statistics","dateAccessed":"2026-01-05","datePublished":"2025-10-10","license":{"url":"https://www.iucnredlist.org/terms/terms-of-use","name":"© International Union for Conservation of Nature and Natural Resources"}}]}