[QUOTE][b]1.)A few bugs survived a storm by floating around in/on debris.[/QUOTE]
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How hot was the water? You may be aware that some calculations of the water temperature of the flood are well above boiling.
Also, explain how an olive tree (in the Bible) and a number of bristlecone pines (in the American southwest) survived a year underwater.
I think I should add that we are not talking about "a few bugs". We are talking hundreds of thousands of species, including those that exist as parasites inside other bugs. The ants you are refering to that ball up in a flood are probably fire ants, an accidental introduction from the Amazon River basin, where flooding is an annual ritual (hence their rafting behavior is an adaptation not common in other species).
They reached the United States through human shipping, making landfall in New Orleans in the 19th century. If they could survive the harsh conditions of a year-long brine flood, then they would probably have made it to the US before Europeans did, floating in ant rafts (or debris) across the Gulf. They also would have had a decent chance of reaching Europe and Africa.
This is one of the problems for the flood presented by biogeography.
If bugs could float all over the world on rafts, then they should all be cosmopolitan. Especially after the Flood. Another biogeography problem is that if all animals came through the Middle East, then the arid regions around Palestine should be the most ecologically productive deserts in the world. There should be representatives of most any desert organism in the world found there. I have yet to hear of Western Diamondbacks found in the West Bank or any species from the American Southwest.