Answer:
What calls for help, when written in capital letters, is the same forwards, backwards and upside down?
What do you have in December that you don't have in any other month?
What get's more wet while it dries?
It is a common and favored clothing material among biker gangs and superheroes.
Dry though I may be, I am still a sea.
Almost everyone needs it, asks for it, gives it. But almost nobody takes it.