Answer:
My first is a body of water. My second is me. My third came before. My fourth before all three. My fifth sounds like my first. My sixth is in a lake. Put all six together to make an animal that will keep you awake.
Gets rid of bad ones, short and tall. Tightens when used, one size fits all.
I look at you, you look at me, I raise my right, you raise your left.
Tool of thief, toy of queen. Always used to be unseen. Sign of joy, sign of sorrow. Giving all likeness borrowed.
A harvest sown and reaped on the same day In an unplowed field, Which increases without growing, Remains whole though it is eaten Within and without, Is useless and yet The staple of nations.
If it’s information you seek, come and see me. If it’s pairs of letters you need, I have consecutively three. What am I?