3013 What a graphic picture of darkness is the depths of the Ocean, wave upon wave, and on top of all, dense dark clouds! There is so little light even in ordinary depths of the Ocean that fishes which live there lose their eyes as useless organs. For lines 4-5, I am indebted to Gardiner's Translation of Ghazari's Mishkat
3014 A contrast to "Light upon Light" in 24:35 above.
3015 The true source of Light in the world of Reality is Allah, and anyone who cuts himself off from the Light is in utter darkness indeed, for it is the negation of the only true Light, and not merely relative darkness, like that which we see, say, in the shadows of moonlight.
13 This is another scientific fact mentioned in the Quran: the existence of underwater waves, like layers.