Ambrose of Milan, on Gen 1:20

“God also said: Let the waters bring forth the creeping creature having life, and the fowl that may fly over the earth under the firmament of heaven.”

“The rivers were in labor. The lakes produced their quota of life. The sea itself began to bear all manner of reptiles.… We are unable to record the multiplicity of the names of all those species which by divine command were brought to life in a moment of time. At the same instant substantial form and the principle of life were brought into existence.… The whale, as well as the frog, came into existence at the same time by the same creative power.”

Imported from an open dataset — not yet checked against the printed edition.