Swan sea 2,905 meters above sea level, semi - swamp lake. On the vast lake, the weeds Yin-yin, Hua-Can, meandering gallery and clean the meantime, the swans have ups and downs, mallard Swarm. Swan sea water is relatively unique in Jiuzhai group. Grass downstream connected with the sea, the vast majority of the lake has deep into shallows, marsh for half the lake. Shoal on the green grass, which together with the entrance of Wanyan flow in a clean, growing out of a side. Swan quietly lying on the sea valley, the lake glistening color couple of foot-and-a-half. Green is thought around the mountains and prosperous Lodge, versatile quiet. This brought out of plump, it naturally attracted to the MIND Swan endearment, often in breeding habitat. Swan years, often in the lake and relaxed posture, slowly swimming, it was known as the Swan Lake Sea. Swan is a migratory bird seasons and the change of stay of visitors is not easy to see Swan trace.