Matthew Poole and continuators on Job 41:18

18. By his neesings a light doth shine, and his eyes are like the eye lids of the morning .

Which may be understood, either, 1. of any commotion or agitation of the body like that which is in neezing, as when the Whale stirreth himself, and casteth or shooteth up great spours of water into the Air by the Pipes which God hath planted in his head for this use; which water being thin and transparent and illuminated by the Sun-beams casts forth a shining light. Or, 2. of neezing properly so called, which the Crocodile is said frequently to do, because it commonly turneth its eyes to the Sun, as Strabo, and others note; which when a Man doth he is apt to neeze.

To which they seem very fitly compared, because the Eyes both of the Whale and Crocodile are dull and dark under the water, but as soon as they appear above water, they cast forth immediately a bright and clear light, though not like that of the Sun at noon day, which had been too great an Hyperbole, yet like the Morning light suddenly breaking forth after the dark Night.