satellite picture of the Great Lakes

The Great Lakes, Lake Superior, Lake Michigan, Lake Huron, Lake Erie and Lake Ontario are a flowing river of freshwater seas.  Not Great Lakes but part of the system are Lake Nipigon the farthest north, and heart shaped Lake St. Clair.  Read more about these Lakes in my book, The Dynamic Great Lakes.

Available from Amazon.com, Amazon's Kindle e reader, Barnes & Noble and many other fine bookstores.