Then there are the koalas, specialized marsupials of oh-so picky diet almost helpless out in the open on the ground any distance from one their beloved eucalyptus trees. It's a long way from Ararat to Aussieland for those guys!
BTW, that brings up an interesting point. How did the fresh water and sea water "un-mix" when the Flood was over? Shouldn't the oceans and lakes all be pretty brackish, considering all this happened only 5k years ago, or so?