Answer:
Only two backbones and thousands of ribs.
A morbidly-named body of water
Do you know what you can hold without ever touching it?
I can be moved. I can be rolled. But nothing will I hold. I'm red and I'm blue, and I can be other colors too. Having no head, though similar in shape. I have no eyes - yet move all over the place.
What can go through glass without breaking it?
Almost everyone needs it, asks for it, gives it. But almost nobody takes it.
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?