God called the dry land Earth, and the waters that were gathered together he called Seas. And God saw that it was good.
On the Third Day, God has separated out the land and the sea. After He does this, He names these things. I wonder if the Hebrew names for these are the same names that God originally used... Did His naming of these things build in something inherent about the Land and the Sea that has endured?
God then pronounces all that He has created so far as "good" and that word means just what you would think it means. This world so far is good, it is pleasing, both to God and to the people who will be inhabiting it.