Answer:
What does everyone know how to open but not how to close?
What is it something that you always have but you always leave behind?
They have not flesh, nor feathers, nor scales, nor bone. Yet they have fingers and thumbs of their own. What are they?
Though easy to spot, when allowed to plume, It is hard to see, when held in a room.
Salty water everywhere but not sea in sight.
A word of five letters, Upside down is the same, A shark does this, But itβs not to blame. What is the word?