Answer:
Deep, deep, do they go. Spreading out as they go. Never needing any air. They are sometimes as fine as hair.
My first is a heir; My second's a snare; my whole is the offspring of fancy; which I sent out of play upon Valentine's day As a token of love to my Nancy.
I am the only word that looks the same when spelled upside down.
I am a kind of coat that can only be put on when wet.
What do you get when you cross a snowman with a vampire?
If itβs information you seek, come and see me. If itβs pairs of letters you need, I have consecutively three. What am I?