Answer:
You see a boat filled with people. It has not sunk but when you look again you don't see a single person on the boat. Why?
I am whole but incomplete. I have no eyes yet I see. You can see and see right through me. My largest part is one fourth of what I once was.
Tool of thief, toy of queen. Always used to be unseen. Sign of joy, sign of sorrow. Giving all likeness borrowed.
What happens once in June twice in August and never in May?
I have a straight back and sharp teeth to cut objects.
What made Cyclops quit teaching?