The Yangtze dolphin is heading towards extinction.
A recent scientific expedition has failed to find a single white-fin dolphin in the Yangtze River, raising fears that the species may become the first whale species extinction due to human activities.
The scientists are cautious about saying the species is extinct yet, despite their inability to find one. They estimate that there are no more than 50 left.
Any white-fin dolphin that is discovered will be transferred to a reserve in a last attempt to preserve the species.