Answer:
I hide in a dark tunnel awaiting my time. I can only be released by pulling back. Once released I may do unstoppable damage.
When you take away the whole from me, there is always some left. What am I?
Iām white; perfect for cutting & grinding. For most animals I am a useful tool.
The Titanic is still here.
I am asleep when you are awake I am awake when you fall asleep. I can fly but no feathers to aid my flight.
It rows quickly with four oars but never comes out from under his own roof. What is it?