June 19, 2012
Heed marine warnings when venturing out on the Great Lakes.
Lake Superior, Lake Michigan, Lake Huron, Lake Erie and Lake Ontario are all connected and have their outlet through the St. Lawrence River to the Atlantic Ocean.
Many shipwrecks lie on the bottoms of these powerful lakes. The cold fresh water preserves them but since zebra mussels entered the lakes accidentally, these shipwrecks are encrusted with them. It is illegal for divers to take things from these shipwrecks.
There are places where glass bottomed boats will take tourists to see what lies below.