What Is Unusual in Nature?

In nature and biology, you do find all kinds of round mechanisms and round bodies. That's what you really don't find much of in nature. But if you're content with just like something round that rolls, you can have a wheel spider rolling down a dune. You can have s that roll up into round shapes and roll all over the place. Even some mammals do that. It is not even just part animal and and part human, or part this animal and part that animal, but part flesh being and part cosmic or technological entity.