The entire body of a sea urchin is what researchers are now calling an “all-body brain,” with neurons that function as a brain throughout its anatomy.
Here’s what you’ll learn when you read this story:
It used to be thought that sea urchins only had a primitive nervous system, but new research has found that they are far more complex than that.
The entire body of a sea urchin is what researchers ar... [4436 chars]