Great Lakes Map: The Freshwater Seas

February 20, 2010

The flowing freshwater seas

Ships and Exotic Species Enter from the Atlantic


 Canada and the United States share the freshwater seas.  Water never stops to show a passport.  The Great Lakes have a rather small watershed compared to their sizes.

These freshwater lakes behave like seas due to their sizes from northernmost Lake Superior to their outlet through the St. Lawrence River.  Many unwanted species such as the zebra mussel, the quagga mussel and gobies have entered through the St. Lawrence Seaway that opened the Great Lakes to global shipping.

Read more about this topic in The Dynamic Great Lakes.  The best price is presently at Barnes & Noble online.


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