Answer:
By Moon or by Sun I shall be found. Yet I am undone if there's no light around.
I am a busy worker who is a water mammal.
I take off my clothes when you put on your clothes. I put on my clothes when you take off your clothes. What am I?
I have 4 wings but cannot fly. I never laugh and never cry. On the same spot I'm always found toiling away with little sound. What am I?
I have a neck but no head. I have a body but no arm. I have a bottom but no leg. What am I?
Describes a mysterious region and a stylish pair of shorts.