John Gills Exposition of the Bible Commentary - Genesis 1:21
And God created great whales ,.... Which the Targums of Jonathan and Jarchi interpret of the Leviathan and its mate, concerning which the Jews have many fabulous things: large fishes are undoubtedly meant, and the whale being of the largest sort, the word is so rendered. Aelianus, from various writers, relates many things of the extraordinary size of whales; of one in the Indian sea five times bigger than the largest elephant, one of its ribs being twenty cubits F18 Hist. Animal. l. 16.... read more
Matthew Henry's Complete Commentary - Genesis 1:20-23
Each day, hitherto, has produced very noble and excellent beings, which we can never sufficiently admire; but we do not read of the creation of any living creature till the fifth day, of which these verses give us an account. The work of creation not only proceeded gradually from one thing to another, but rose and advanced gradually from that which was less excellent to that which was more so, teaching us to press towards perfection and endeavour that our last works may be our best works. It... read more