The great quantity of water in the seas makes our earth habitable. If the proportion of sea to land on the earth were smaller, then lands would turn into deserts and life would be impossible.

A conscientious person who thinks about these matters is completely convinced that the establishment of such a perfect balance on the earth is surely not a coincidence. Seeing and thinking about all these shows that a Creator Who is exalted and the owner of eternal power created everything for a purpose.

And He has made everything in the heavens and everything on the earth subservient to you. It is all from Him. There are certainly Signs in that for people who reflect. (Surat al-Jathiyya: 13).