On which day of Creation did God make the land and seas? God made the land and seas on the third day. In Genesis 1:9–13, the waters are gathered into one place so that dry ground can appear. God calls the dry ground “land” and the gathered waters “seas,” then declares the result good.
The third day also includes the creation of vegetation: seed-bearing plants, trees, and fruit-bearing trees. This makes it distinct from the second day, when the expanse or sky is described, and the fourth day, when the sun, moon, and stars are placed as lights in the sky.
A common mix-up is to associate the seas with the second day because that passage discusses the waters above and below the expanse. Genesis 1 assigns the separation of dry ground from gathered waters, and the naming of land and seas, to the third day. The creation narrative then continues with celestial lights on day four, sea creatures and birds on day five, and land animals and humans on day six.