Okay, I'll try to list what is inaccurate with Noah's Ark.
-The boat is too small to fit all the animals.
-Everyone would suffocate.
-Everyone would freeze to death.
-The carnivores would eat the herbivores.
-The ecosystem would be f***ed.
-There would need to be a lot of food. Oh, and the meat would rot given the timespan.
-The animals would need to cross-breed, causing genetic issues.
-The water suddenly vanishing would make no sense.
-The animals would need to go ALL the way back to their habitats, starving to death along the way.
-There is another incestuous family.
-The can't be enough rain to cover Mt. Everest
That is all I could think of. Holy shit, that is a lot of wrong stuff in Noah's Ark!