Hwakanoians

The Hwakanoians are the main dominant civilization in Hwakanoas.

They are a giant floating race that goes around whistling everywhere. Their entire body is just a mouth. They aren't very good at whistling, but they do it anyway.

They have no way of advancing civilization, and don't have any cities, because they don't have any language or way of communicating.

All other forms of life live in fear of them. Of course, they don't know that, because they don't have any language and can't see anything else.