Answer:
What goes in the water black and comes out red?
I am a protector. I sit on a bridge. One person can see right through me while others wonder what I hide.
Where do fish keep their money?
I always have to work with something in my eye.
I am an instrument you can hear but cannot touch or see. What am I?
It has no top or bottom, but it can hold flesh, bones, and blood all at the same time.