Answer:
What animal dwells in water and best known for its work ethic?
I am a mammal that lives in the sea. I have flippers and am known for my intelligence. What am I?
While I did live, I food did give, which many one did daily eat. Now being dead, you see they tread me under feet about the street.
What has no arms, hands, or legs but moves the earth?
With four oars it swims but it is always at home. Its back is like armor, tougher than chrome. What is it?
Black we are and much admired. Many seek us if they are tired. We tire the horse, and comfort man, and turn White when we've fulfilled your plan.