Zohar, Bereshit 40

1LET THE WATERS SWARM WITH SWARMS OF LIVING CREATURES. R. Eleazar said: ‘These are the lower waters, which brought forth species corresponding to those above, so that there was a lower order and a higher order.’ R. Hiya said: ‘It was the upper waters which brought forth a “living soul”, to wit, the soul of the first man, as it is written, “and the man became a living soul” (Gen. 2, 7).’

2AND FOWL TO FLY ABOVE THE EARTH. These are the emissaries from the upper world which appear to men in visible shape. For there are others of whose existence man knows only by conjecture.

3These latter are referred to in the next verse in the words, “every winged fowl after its kind”. The words “after its kind” are used in connection with the latter and not with the former, because the latter never take the forms of another species, whereas the former do. Nevertheless, they do differ one from another.