Yangtze River dolphin (baiji) declared functionally extinct (2006)
An international survey team swept the entire Yangtze River in 2006 and found no baiji, the river's endemic freshwater dolphin. The expedition declared the species functionally extinct — the first dolphin lost to human activity.
No individual was found and the species was effectively gone despite decades of earlier sightings.
The baiji became the benchmark for freshwater cetacean extinction, a warning for all remaining river dolphins.
The Indus dolphin shares the baiji's vulnerability to dams, fragmentation and fishing. The new sanctuary is the direct effort to avoid that endpoint.
