Extinct in the wild George on the Galapagos island of Pinta on 1 December 1971. Since then, Lonesome George has been a powerful symbol for conservation efforts in general and for the Galapagos Islands in particular. With his death on 24 June 2012, the subspecies is again believed to be extinct. With the discovery of 17 hybrid Pinta tortoises located at nearby Wolf Volcano a plan has been made to attempt to breed the subspecies back into a pure state. Not all species that are extinct in the wild are rare. For example, "Ameca splendens", though extinct in the wild, was a popular fish
Extinct comet Sun. Roughly six percent of the near-Earth asteroids are thought to be extinct nuclei of comets which no longer experience outgassing. Suspected or theorized extinct comets include: Extinct comet An extinct comet is a comet that has expelled most of its volatile ice and has little left to form a tail and coma. In a dormant comet, rather than being depleted, any remaining volatile components have been sealed beneath an inactive surface layer. Due to the near lack of a coma and tail, an extinct or dormant comet may resemble an asteroid rather than a comet and blur the distinction