Answer:
Deep, deep, do they go. Spreading out as they go. Never needing any air. They are sometimes as fine as hair
Both guys and women enhance their visual organs with this item.
A canvas full of stars.
Watches students at the prom to make sure there's no funny business.
They keep secrets locked away. And you pass through them each day. For each one there is a key, They respond to sesame.
People take me on walks and I run and have fun. What am I?