Answer:
What grows up while growing down?
Edible beach crawler served at seafood restaurants, similar to a lobster, but quite different.
What can provide food before it is alive, while it is alive and after it's dead?
A nutcracker up in a tree
Even if my life is taken eight still remain.
I repeat only the last word you say. The more I repeat, the softer I got. I cannot be seen but can be heard. What am I?