<Li> Bowhead whale (very occasionally, historically common) </Li> <Li> North Atlantic gray whale (Extinct) </Li> <Ul> <Li> North River </Li> <Li> Saint Louis River </Li> <Li> Lake Superior </Li> <Li> Saint Marys River </Li> <Li> Lake Huron </Li> <Li> Saint Clair River </Li> <Li> Lake Saint Clair </Li> <Li> Detroit River </Li> <Li> Lake Erie </Li> <Li> Niagara River </Li> <Li> Lake Ontario </Li> </Ul> <Li> Saint Louis River </Li>

St. lawrence river fresh water meets salt water