Answer:
Hard to catch, easy to hold. Can't be seen, unless it's cold.
I am mother and father, but never birth or nurse. I'm rarely still, but I never wander.
Looks like water, but it's heat. Sits on sand, lays on concrete. A play on the eyes, but it's all lies.
Round as a button, deep as a well. If you want me to talk, you must first pull my tail.
When you stop and look, you can always see me. If you try to touch, you cannot feel me. I cannot move, but as you near me, I will move away from you.
If itβs information you seek, come and see me. If itβs pairs of letters you need, I have consecutively three. What am I?