To him that stretched out the earth above the waters: for his mercy endureth for ever. Stretched out the earth above the waters - Or, upon the waters. This seems to refer to a central abyss of waters, the existence of which has not been yet disproved.
Related Commentaries of Psalms 136:6
Psalms 136:6
6 To him that stretched out the earth above the waters: for his mercy endureth for ever.