1. Baiji 白鳍豚

2. Today we are going on a trip to know something about Baiji.

3. Scientific classification
An illustration of the baiji
Size compared to an average human
Scientific classification
Kingdom:
Animalia
Phylum:
Chordata
Class:
Mammalia
Subclass:
Eutheria
Order:
Cetacea
Suborder:
Odontoceti
Superfamily:
Platanistoidea
Family:
Lipotidae Zhou, Qian & Li, 1978
Genus:
Lipotes Miller, 1918[3]
Species:
L. vexillifer
Binomial name
Lipotes vexillifer Miller, 1918

4. SOME INFORMATION ABOUT BAIJI

5. Length: 8 feet (2.5 m) Weight: 500 pounds (220 kg)
Habitat: Yangtze River (Changjiang River)
Lifespan: about 25 years
(based on an individual in captivity)
Behavior: very little is known about the behavior, but they depend largely on underwater sound for orientation, feeding, and communication and, just like most dolphin species, they produce clicks and whistles.
Diet: large variety of freshwater fish species
Appearance: pale blue to gray on their back and white on the under side
Length: 8 feet (2.5 m)
Weight: 500 pounds (220 kg)

6. Baiji has many names in English
Chinese river dolphin
Yangtze River dolphin
Whitefin dolphin
Yangtze dolphin
Because it was regarded as the goddess of protection by local fishermen and boatmen in China.
And it also has a beautiful nickname:
Goddess of the Yangtze

7. However, Baiji started to disappear since the 20th century
In 2002, there was less than 50 of them.
And the number was still decreasing!

8. Even they have probably died out now!
Now Baiji has not only been listed as a
wild animal with national-level
protection, but also became
one of the world's
twelve most
endangered
animals!
Even they have probably died out now!

9. The extinction of Baiji is caused by HUMAN BEINGS!
Fishing
Pollution

10. Because of too much fishing, no more food is available for Baiji.
So many of them died of hunger…

11. And their environment is being polluted by the waste water from medicine factory.

12. Even worse, Baiji is considered as the first
kind of cetacean
mammal that is
‘wiped out’ by humans.

14. But is Baiji the only victim???

15. If the environment keeps going worse, these lovely creatures will disappear in 10~15 years.

16. And these……

17. We can’t see them any more, even for one chance……

18. If nature can not provide them with suitable habitats, we human will be ‘wiped out’, too……

19. To protect animals is to protect ourselves!
No wild life,
no human beings!

21. Thank you!
Speaker: 孙世康
PPT Editor: 陈涵晟 孙世康
(江西师大附中高一（1）班)