Answer:
I am a busy worker who is a water mammal.
I reach for the sky, but clutch to the ground. Sometimes I leave, but I am always around. What am I?
I will disappear every time you say my name. What am I?
Turns me on my backs and open up my stomach. You will be the wisest of men though at start a lummox.
When you take away the whole from me there is always some left.
Brings the sky a lot closer.