After reading the Page here titled Natural Selection by Noah’s Flood, it seems reasonable to estimate that the pre-Flood ocean was about half the volume as the ocean after the Flood, when though some of its volumes, about 300 vertical feet’s worth, in its heated state, began to evaporate to form the dense cloud cover of the Ice Age, melted when the average ocean temperature had declined to about today’s temperatures by circa 1500 b; c, the beginning of the so-called bronze age collapse.