That is to say, externally visible parts of the body in humans and animals.

The scales are large and there is no externally visible lateral line.

Minor externally visible changes common across the whole line include the following:

It has a smooth body and translucent skin; its blood is externally visible.

They have 74 to 108 thin and sharp teeth, not externally visible.

The body ends in a blunt shield; the eyes are not visible externally.

Because the neck is not externally visible, the head and body appear to merge.

The eyes are highly reduced and not visible externally.

The eye was not visible externally, instead covered by thick bone.