There's no reason to assume tectonics worked differently 5,000 years ago, which doesn't operate by how much ocean there is. The mountains of Ararat where the Ark supposedly set down are too high to be covered, let alone higher mountain ranges..
Apparently actually reading the reference material isn't your strong suit either. Right near the beginning of the article it says;
According to Brown, the earth was an extremely different place before Noah’s flood. Oceans were much shallower and mountains much lower.
Read more at
Does science prove Noah’s flood?
Do you comprehend how that counters your narrow pov for high mountain ranges.
No it isn't, it's physics and biology. A global flood sufficient to cover all mountains would have changed the temperature, current, ph, salinity and pressure of climate zones for sea animals. Killing pretty much all of them. I could give ten or fifteen reasons coral should be extinct. The only way out is to assume magic saved them, by definition ascientific reasoning. Which is why a global flood story isn't scientific.
Can you show me the physics and biology to back your opinion?
Isn't it also an evolutionists view that life can adapt to changes? if they can posit that the asteroid that killed all the dinosaurs could still be rationalized to allow for life to continue then a simple addition of water should be a snap right? How much temperature change, current, ph, salinity and pressure of climate zones for sea animals have been affected by that?
Dinosaur-Killing Comet Didn't Wipe Out Freshwater Species
....Now new research, detailed online July 11 in the Journal of Geophysical Research-Biogeosciences, suggests freshwater life survived extinction because they were better adapted to withstand rapid changes in their surroundings, which helped them outlast the crises in the wake of the catastrophe....
...
Gimme shelter
Water would have helped shelter life in rivers and lakes, as well as the seas and oceans, from the initial blast of heat from the cosmic impact. However, the giant extraterrestrial collision set fire to Earth's surface, darkening the sky with dust and ash that cooled the planet. The resulting "impact winter" and its lack of sunlight would have crippled both freshwater and marine food chains by killing off microscopic photosynthetic organisms known as phytoplankton that are at the
base of the marine and freshwater food chains.
Intriguingly, while marine communities were devastated by the mass extinction, losing 50 percent of their species, geophysicist Douglas Robertson at the University of Colorado at Boulder and his colleagues looked at a database of western North America fossils and discovered freshwater ones there survived relatively unscathed, losing only about 10 percent of their species.
Dinosaur-Killing Comet Didn't Wipe Out Freshwater Species
Sounds fairly magical to me.