Hello Who me,
It is nice to have conversations with people living in the now, rather than links pointing to a script.
If you want to take a literal position, that H2O covered all land on earth, for The Flood of Genesis, I see this as a position that violates the basics of the water cycle.
Water evaporates, and rises up, then, falls back down as rain.
Over and over. Nothing more, nothing less.
Genesis says the windows of heaven (firmament) were opened.
Where did all the water go after the flood that enveloped all the world?
Was it lost in space?