Yangtze Finless Porpoise
Pale blue/grey with a lighter underside. Has a long, thin beak and a flexible neck. The dorsal fin is triangular shaped and the eyes are tiny.
The social structures seem to be underdeveloped and mother/calf pairs are the only stable social constellations.
Yangtze River (China)
Rarely local sharks
Do not migrate.
Social system/Group size
Usually in groups of 3 - 5.
The decrease in food supply through overfishing, pollution, ship strikes and entanglement in fishing gear are the biggest threats to the Yangtze river porpoise. They also suffer from the building of dams and urbanization of that area.
The population of the Yangtze River Dolphin has rapidly declined over the last 30 years and in November and December 2006 a six week survey was carried out which failed to locate any surviving Yangtze River Dolphins. If they still survive they are the world's most threatened cetacean species.