Answer:
Why is it so easy to weigh fish?
What comes once in a year twice in a week but never in a day?
I can fly but I have no wings. I can cry but I have no eyes. Wherever I go, darkness follows me. What am I?
I am a type of weapon for SCI-FI characters
I only exist when you are here. Where you never were I can never be.
Often cooked as fillet, this meat comes from an animal that swims underwater.