Answer:
The ones in the sea are prickly, but the ones on the street might pickpocket you.
My first is twice in apple but not once in tart. My second is in liver but not in heart. My third is in giant and also in ghost. Whole I'm best when I am toast.
According to the ads, this is the favorite beverage of friendly polar bears.
What has a coat? Hugs you not in sympathy? Whose smile you'd rather not see? Whose stance is a terrible thing to see? Who is it that brave men run away from? Whose fingers are clawed? Whose sleep lasts for months? And who's company we shunt?
It is an insect, and the first part of its name is the name of another insect. What is it?
What is always coming but never arrives?