Answer:
What peels like an onion but still remains whole?
A darkΒ-colored creature serenaded by Lennon and McCartney.
What is that which, while it lives, constantly changes its habit, that is buried before it is dead, and whose tomb is valued wherever it is found?
What jumps when it walks and sits when it stands?
I am a large mammal that lives in the ocean and sprays water from a blowhole. What am I?
Of these things - I have two. One for me - and one for you. And when you ask about the price, I simply smile and nod twice.