Answer:
With four oars it swims but it is always at home. Its back is like armor, tougher than chrome. What is it?
The ones in the sea are prickly, but the ones on the street might pickpocket you.
I am wingless but airborne, and when I meet your gaze tears will fall from your eyes. What am I?
What build its house with earthen string and ensnares its prey with a biting sting?
A king without a crown
Pirates put their booty in it.