The pool (she) symbol in Egyptian mythology represents water. It is a rectangle, longer horizontally than vertically, with seven equally spaced vertical zigzag lines within it.[1]
It can also represent the primal waters that the Egyptians believed was the source of all things, which they called Nun. Occasionally, the sun god is depicted as a sun arising from the pool symbol.
Egyptian pharaohs had decreed that objects in paintings and the like should be instantly recognizable to the viewer. Hence, reflecting pools were shown from a bird's-eye view, even if the rest of the image was shown from the side.