Answer:
Dry though I may be, I am still a sea.
It is a common and favored clothing material among biker gangs and superheroes.
It comes from crystal and melts to a treat. Add it to your tea to make it sweet. What is it?
How many months of the year have 28 days?
Born in the past, but only lives in the present. Sometimes false, always personal.
Though not a plant, has leaves. Though not a beast, has spine. Though many wouldn't need this thing, It's more valuable than wine.