He maketh the deep to boil like a pot: he maketh the sea like a pot of ointment. He maketh the deep to boil like a pot - This is occasioned by strongly agitating the waters at or near the bottom; and the froth which arises to the top from this agitation may have the appearance of ointment. But several travelers say that the crocodile has a very strong scent of musk, and that he even imparts this smell to the water through which he passes, and therefore the text may be taken literally. This property of the crocodile has been noticed by several writers.
Related Commentaries of Job 41:31
Job 41:31
31 He maketh the deep to boil like a pot: he maketh the sea like a pot of ointment.