Answer:
I am nothing but holes tied to holes, yet am strong as iron.
I don't have eyes, but once I did see. Once I had thoughts, but now I'm white and empty.
A word I know, six letters it contains. Subtract just one and twelve remains.
I can be quick and then I'm deadly, I am a rock, shell and bone medley. If I was made into a man, I'd make people dream, I gather in my millions By ocean, sea and stream.
This thing runs but cannot walk, sometimes sings but never talks. Lacks arms, has hands; lacks a head but has a face.
When is it bad luck to see a black cat?
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?