Genesis 1:9-13
9 And God said, “Let the waters under the heaven be gathered together unto one place, and let the dry land appear”; and it was so.
10 And God called the dry land Earth; and the gathering together of the waters called He Seas; and God saw that it was good.
11 And God said, “Let the earth bring forth grass, the herb yielding seed, and the fruit tree yielding fruit after his kind, whose seed is in itself, upon the earth”; and it was so.
12 And the earth brought forth grass, and herb yielding seed after his kind, and the tree yielding fruit, whose seed was in itself, after his kind; and God saw that it was good.
13 And the evening and the morning were the third day.
Dry Land
Remember that at the beginning of creation in verses 2 and 3 that the entire Earth was covered with water, deep water in fact. That means that there is no dry land and whatever solid land was in existence at the time will be submerged under the water.
On the third day, God said to gather the waters into one place and allow the dry land to appear. The world that then was is a single continent surrounded by water, given the description of the creation act of God here.
At the same time, God named the dry land Earth and the waters the Seas (plural to denote the wide expanse). And God liked what He saw and called it good.
But did you know that as the tectonic plate action caused the continent or dry land to be pushed up above the water level, we read that the Earth also has a foundation that is fastened, probably to the layer below the crust.