We all know the tale. 40/40 of rain, then it stayed that way for approximately a year, every land mass underwater, etc. Well, if everything is underwater, that includes the highest peaks, and...well, that's not water up that high...it's ice. We know oxygen for breathing is beyond not optimal that elevation. We also know that all vegetation has been wiped out in this scenario, so not even just the lack of food production is gone, also gone is any way that co2 is being turned back into oxygen. So...how do the mythical crew perish, first???