It was my understanding from reading Genesis that God sent the animals to Noah. He just had to convince them to get in the ark. One theory I have heard that God put the animals to sleep - like hibernation. And if the whole world was underwater, there would be no need to go to different continents. I figure if he got a couple of basics, then after they got off the ark, they evolved into even more species. But miracles are usually hard to explain anyway.
Hold it just a minute, you've definitely said in the past that you categorically don't accept any speciation. You appear to be changing tack. How much speciation are you now prepared to accept?
Yep. Things that are impossible for man are possible for God. How He performs miracles is never fully described..He fed 5000 with a loaf of bread and 2 fishes. DNA for 10 million +/- species will fit in a teaspoon.