Chapter XXXIII.—Works of Creation.
“He alone turned into the four contrary elements 975 the one, first, simple substance. Thus combining them, He made of them myriads of compounds, that, being turned into opposite natures, and mingled, they might effect the pleasure of life from the combination of contraries. In like manner, He alone, having created races of angels and spirits by the Fiat of His will, peopled the heavens; as also He decked the visible firmament with stars, to which also He assigned their paths and arranged their courses. He compacted the earth for the production of fruits. He set bounds to the sea, marking out a dwelling-place on the dry land. 976 He stores up the things in Hades, designating it as the place of souls; and He filled all places with air, that all living creatures might be able to breathe safely in order that they might live.
This is rather a paraphrase than a strict translation.244:976
Various reading, “assigned it the sea as a habitation for aquatic animals.”