What is this animal

What is this animal with a shell as hard as a rock?
What is this animal with a body as soft as a sock?
What is this animal that lives at the shore?
Should I ask you more?

What is this animal with a tail as sharp as a pencil?
It’s too bumpy to be a stencil.
What is this animal with two compound eyes?
I won’t tell any lies.

What is this animal that can go a year without eating?
Hey, at least it won’t be pleading.
What is this animal with legs like claws?
It definitely doesn’t have any paws.

I know, I know what this animal is! It’s a horseshoe.