One of the world’s 3 surviving northern white rhinos will soon become an endling, as will one of the 30 surviving vaquita porpoises.
Wikipedia: endling
An endling is an individual that is the last of its species or subspecies. Once the endling dies, the species becomes extinct. The word was coined in correspondence in the scientific journal Nature. Alternative names put forth for the last individual of its kind include ender and terminarch. The word relict may also be used but usually refers to a group that is the last of the species.[1]
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The 4 April 1996, issue of Nature published a correspondence in which commentators suggested that a new word, endling, be adopted to denote the last individual of a species.[1][2] The 23 May issue of Nature published several counter-suggestions, including ender, terminarch, and relict.[1][3]
The word endling appeared on the walls of the National Museum of Australia in Tangled Destinies, a 2001 exhibition by Matt Kirchman and Scott Guerin about the relationship between Australian peoples and their land. In the exhibition, the definition, as it appeared in Nature, was printed in large letters on the wall above two specimens of the extinct Tasmanian tiger: "Endling (n.) The last surviving individual of a species of animal or plant." A printed description of this exhibition offered a similar definition, omitting reference to plants: "An endling is the name given to an animal that is the last of its species."[4][5]
In The flight of the emu: a hundred years of Australian ornithology 1901-2001, author Libby Robin states that "the very last individual of a species" is "what scientists refer to as an 'endling'".[6]
In 2011, the word was used in the Earth Island Journal, in an essay by Eric Freedman entitled "Extinction Is Forever: A Quest for the Last Known Survivors". Freedman defined endling as "the last known specimen of her species."[7]
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