There's a thread in IMHO about kayaking in the Minnesota area and I posted a link suggesting the North Shore of Lake Superior in Minnesota. At the bottom of that link was "whale watching". I followed the link to here
where it lists the sightings of whales in freshwater Lake Superior.
I had no idea that there are whales that were in there (or that would travel that far inland.)
According to this website,
there are no freshwater whales in the world.
Are there are any freshwater whales in the world and if so where?
There are no freshwater whales. The large Baleen and Toothed whales would die in freshwater for no other reason than insufficient food. They gather much more food from the ocean than they ever could from rivers and estuaries. But, there are a number of Dolphins that do live in freshwater.
In the tropical Indo-Pacific there are freshwater, estuarine and coastal species. These include the blind river dolphins, the Indus and Ganges susus of India and Pakistan, and the baiji of the Yangtze River in China. Other moderately similar forms exist in the rivers, estuaries and coastal waters of eastern South America. These include the boto or boutu, a river dolphin of the Amazon and Orinoco basins, and the franciscana, a river dolphin of the La Plata estuary which has extended its range along the coast southwards into the cooler waters of Argentina.
But according to this one, there are
(but it doesn't list Lake Superior)
Many people are surprised to discover there are whales living in some freshwater rivers. If you go to China you might see a Beiji (aka Chinese river dolphin). If you go to South America you might see a boto (aka Amazon river dolphin).
And this one
switches it back a bit:
6. Geochemical evidence
The earliest whales lived in freshwater habitats, but the ancestors of modern whales moved into saltwater habitats and thus had to adapt to drinking salt water. Since fresh water and salt water have somewhat different isotopic ratios of oxygen, we can predict that the transition will be recorded in the whales' skeletal remains - the most enduring of which are the teeth. Sure enough, fossil teeth from the earliest whales have lower ratios of heavy oxygen to light oxygen, indicating that the animals drank fresh water (Thewissen and others 1996). Later fossil whale teeth have higher ratios of heavy oxygen to light oxygen, indicating that they drank salt water. This absolutely reinforces the inference drawn from all the other evidence discussed here: the ancestors of modern whales adapted from terrestrial habitats to saltwater habitats by way of freshwater habitats.
So, should the North Shore Visitor's whale watching page be taken with a grain of salt or is it just a salty tale?