Answer:
What gets colder as it warms up?
Spies and detectives do this to phones and musical shoes make this sound.
They are the shore's gallant knights.
This is your stomach's way of letting you know you've neglected it.
One strand dangles. Two strands twist. Three or more can fashion this.
I am the fountain from which no one can drink. For many I am considered a necessary link. Like gold to all I am sought for, but my continued death brings wealth for all to want more.