摘要
Based on historic sightings,Chinese white dolphins have inhabited the waters around the Mainland since the 1600s,and could once be spotted from Macao to the coast of Shanghai.Despite their name,the dolphins are recognized by their pink color;which develops as they age.These days there are four major populations in China's Mainland,including the Pearl River Estuary;Xiamen,Beibu Bay and Leizhou.