The last confirmed sighting of the baiji, also known as the Chinese river dolphin, is now more than 20 years ago. The IUCN therefore classifies the species as “Critically Endangered (Possibly Extinct)”. Scientifically, its continued existence is considered extremely unlikely, but occasional sighting reports and video recordings at least leave
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Illustration of the Chinese river dolphin (baiji)—once a characteristic resident of the Yangtze. With its long, narrow snout and the sickle-shaped dorsal fin, the baiji was unmistakable. Today, the species is considered “functionally extinct”. (© Doc Taxon, CC BY-SA 3.0, via Wikimedia Commons)

