I noticed a couple of real world SSS phenomena the other day.
First of all if you cast a shadow on your hand there’s a red glow round the inside of the shadow.
Secondly, if you shine a light through your fingers, they are entirely translucent! there’s not a single part of your fingers that doesn’t glow red. as your bones aren’t transparent this must be because of sss. It probably helps that you haven’t any muscle in your fingers, only tendons.