The Bible indicates that man was a vegetarian before the flood and implies that the animals were also.
Chapter & verse? And how, exactly, did those antediluvian snakes and ticks and lions and leeches chew their food?
Imo, the flood wasn't sea water. Most of the flood waters came from the vapor canopy which condensed and fell to earth. It would have diluted the relatively small bodies of earth water that may have had some salt content.
Where did all this fresh water disappear to? How did it avoid killing all those forms of sealife that must have seawater to live?
The continents wouldn't have divided totally until the frozen Arctic .....
Allowing more time for marsupials to get mixed up with placentals on their way to Oz? This reply doesn't even address the question: Why koalas and bilbies in Australia and nowhere else? Why no cats or rabbits in Australia until Europeans arrived?
terrarium atmosphere canopy indicated then.
If this "canopy" held enough water to fill even half of our present seas, would you care to hear an estimate of what the atmospheric pressure would have been? Would you be interested in knowing what the percentage of oxygen was? Would you like to see a vapor-pressure chart to indicate the temperatures required to keep that water as vapor?