- The Yangtze River Dolphin (Lipotes vexillifer) or Baiji or Yangtze Dolphin or Chinese River Dolphin or whitefin dolphin
- nicknamed "Goddess of the Yangtze"
- last confirmed sighting almost 20 years ago
- possibly the first dolphin species driven to extinction by humans
- possible sighting in August 2007, unconfirmed
- possible sighting in October 2011, unconfirmed
- possible sighting in October 2016, unconfirmed, disputed
- Conservation Status: CRITICALLY ENDANGERED, possibly extinct