Answer:
The sun bakes them, the hand breaks them, the foot treads on them, and the mouth tastes them.
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.
Beautiful girls strut and sexy men 'do their little turn' on this.
The higher I climb, the hotter I engage. I cannot escape from my crystal cage.
Face with a tree, skin like the sea. A great beast I am. Yet vermin frightens me.
All about, but cannot be seen, Can be captured, cannot be held, No throat, but can be heard. Who am I?