Swan Oxbow of the Yangtse River lies in Shishou city in Hubei province. It is the protection area of Baiji dolphin.

长江天鹅洲故道位于湖北省石首市境内，是著名的白暨豚自然保护区。

youdao

Earlier this year the baiji or Yangtse River Dolphin was declared probably extinct, and the Critically Endangered vaquita (Phocoena sinus) - another species restricted to a small, specific habitat - will follow suit without swift action, conservationists believe.

BBC: Finance woes put porpoise at risk