When you look at a map of the sea floor it definitely looks like . . . something happened down there. I mean it looks like lots of things might have happened down there, but it's interesting that one of the things that it looks like, in some places, like around the 'ring of fire' in the Pacific, is 'deflated'. Like there was at one point like a water bed that broke open and now what used to be the top of the bed is under the sea and there are places where it looks like it tore open (the 'trenches') and out of which all the water escaped from.
It's also interesting that geological historians or historical geologists everybody believes in multiple mass extinction events, and in multiple massive floods. Rather than believe in just one mass extinction event and one massive flood and that they are both the same one event, they believe in multiple mass extinctions and multiple gigantic floods that occurred over the last like billion years, instead of just believing there's one global event that happened like within the last 6,000 years.
We couldn't see the ocean floor like this until space satellites. That means when people were pondering the Flood account in the Bible, all they could ever see was the sea, but not the sea floor. They didn't have access to that data until we rocketed up satellites with special cameras that could see through the water to the abyssal plains, the mid-ocean ridges, trenches, and the like. I mean we had sonar, but we couldn't see the whole world's seabed until the space age.
And one more thing about the Flood, is that we're inquiring here about a natural event, not a miracle. While the Bible records the Flood, the Flood itself was not supernatural or miraculous. The earth was, if the Flood really happened, 'set up' for a flood. It was possible to happen once, and naturally.
And I still want to know if anyone has ever been able to determine whether large scale atmospheric rainbows were possible before the earth was covered 70% in water. Because that would be interesting one way or another to know.