I am new to 3d modeling, and I have some problems after finishing my project. To preface, my goal was to create a tiger mask.
My problem is that when I show my non-manifold elements, I have some non-contiguous and boundaries non-manifold, shown below:

As I said, I am new to 3d modeling, but I did notice that the boundaries ones were shown where there was a hole or opening, as in the eyes, mouth, or back. Why would this be? I could find nothing that would cause the non-contiguous ones as well.
