The baiji was a graceful animal, with a long, narrow and slightly upturned beak and a flexible neck. As opposed to some other freshwater dolphins, like the Indus River dolphin, its eyes were functional, although greatly reduced. Its coloration was bluish-gray to gray above and white to ashy-white below. It weighed 135 – 230 kg (300 - 510 lb) and measured as much as 2.5 m (8.2') in length.