Yangtze River dolphins

Extinct in 2002

Yangtze River dolphins in LOST ZOO

    Yangtze River dolphins

    Like other river dolphins, the Baiji has a very long, narrow beak with a slightly upturned tip and with 30-36 teeth per side of both the upper and lower jaws. The small eyes are placed high up on the face.

    Yangtze River dolphins

    The Baiji are usually found in pairs, which aggregate often to form larger social units of about 10 individuals.

    Yangtze River dolphins

    In the turbid waters of the Yangtze, vision is mostly useless and the Baiji have poor eyesight, but use a highly developed echolocation for navigation and to find food.

    Yangtze River dolphins

    The major factors causing the decline of the Baiji in recent years is illegal fishing using electricity, which has accounted for 40 percent of known deaths, and especially water pollution and the construction of dams and floodgates that block fish migration in the river's tributaries and lakes.

    Baiji or Yangtze River dolphin

    The Baiji is found in China in the mouth of Yangtze River to a point about 1900 km up the river, as well as in the middle and lower regions of the Quintangjiang River and in the Dongting and Poyang lakes.

    Body length: Males 141-216 cm, females 185-253 cm

    Body weight: Males 42-125 kg, females 64-167 kg

    Color: pale blue-grey dorsally and white ventrally.

    Gestation period: estimates range from 6 to 12 months. Females give birth to one 80 cm long calf every two years

    Sexual maturity : at 3 to 8 years of age

    Lifespan : 24 years or more.

    Californian grizzlies