Lake Superior the Soo Locks. Lake Superior is the largest freshwater lake in the world in area (if Lakes Michigan and Huron are taken separately; "see Lake Michigan–Huron"), and the third largest in volume, behind Lake Baikal in Siberia and Lake Tanganyika in East Africa. The Caspian Sea, while larger than Lake Superior in both surface area and volume, is brackish; though presently isolated, prehistorically the Caspian has been repeatedly connected to and isolated from the Mediterranean via the Black Sea. Lake Superior has a surface area of , which is approximately the size of South Carolina or Austria. It has a
Yangcheng Lake Yangcheng Lake Yangcheng Lake () is a freshwater lake about northeast of the city of Suzhou in Jiangsu Province, China. It is the most famous area of origin for the Chinese mitten crabs which are considered a delicacy. Yangchen lake is located between Lake Tai and the Yangtze River. It crosses the boundary of the cities Suzhou, Changshu and Kunshan and has a surface area of about . The Chinese mitten crabs migrate from Yangcheng Lake towards the Yangtze delta for mating in September and October. The local fishermen harvest the animals during this migration. In 2002, the total production