Why does the Rare China River Dolphin have a long mouth?

The Rare China River Dolphin, also known as the Yangtze River dolphin or Baiji, has a long mouth that is adapted for its feeding habits. This elongated snout allows it to efficiently catch fish and navigate through the shallow waters of the Yangtze River, where it primarily resides. The long mouth also aids in suction feeding, enabling the dolphin to extract prey from the riverbed and among vegetation. Overall, this anatomical feature helps the Baiji thrive in its specific aquatic environment.