Maps depicting human migrations, like the one from TransPacificproject.com, below, are based on the prevailing “no flood, ever” paradigm.
Data for such maps come from research like “A DNA Search for the First Americans Links Amazon Groups to Indigenous Australians,” reported in a 2015 Smithsonian article. There we find the next map displaying, by color, DNA similarities among indigenous humans (dark = closely linked, clear = not closely linked). Note that native Australians are closely linked to native South Americans. 
In the Smithsonian article, we read:
“More than 15,000 years ago, humans began crossing a land bridge called Beringia that connected their native home in Eurasia to modern-day Alaska. Who knows what the journey entailed or what motivated them to leave, but once they arrived, they spread southward across the Americas.
The prevailing theory is that the first Americans arrived in a single wave, and all Native American populations today descend from this one group of adventurous founders. But now there’s a kink in that theory. The latest genetic analyses back up skeletal studies suggesting that some groups in the Amazon share a common ancestor with indigenous Australians and New Guineans. The find hints at the possibility that not one but two groups migrated across these continents to give rise to the first Americans.”
Thus, according to the article, and as depicted in the migration map, we are supposed to believe that, during the last ice age, native Australians made their way northward! more than 10,000 km through Asia, crossed an hypothesized land bridge through either the Bering Strait or the Aleutian Atoll, then made their way more than another 10,000 km to South America – all the while doing this without leaving their DNA signature!? What bunk.
A correct explanation for the native Australians-South American DNA similarities has nothing to do with migrations; instead it has to do with surviving the worldwide flood, described in my recent publication, “The Flooding of the Mediterranean Basin at the Younger-Dryas Boundary.” That is, pre-flood humans from the same “clan” spanned the tropical to near-tropical expanse from Australia to SA, and flood survivors from the eastern and western extents of the region bear the family’s DNA signature. Related materials regarding Lemuria (and COL James Churchward’s work) can be found here.
Other maps depicting DNA similarities are accessible from eupedia, and several are shown, below (Mediterranean, Early European Farmer, and Atlantic admixtures).
If the darkest regions correlate with the origination for the particular admixture, then these DNA maps corroborate that humans from the pre-flood Mediterranean Basin survived upward to presently subaerial landscapes surrounding what is now the Mediterranean Sea. They did not migrate out of Africa, as claimed in the transpacific map.
Of particular interest to me is the greatest concentration of the Atlantic admixture found near the Basque region of Spain in the bottom map. This indicates that humans from the pre-flood Atlantic basin survived the worldwide flooding event 12,800 years before present. Their relatives from Atlantis were not so fortunate.
The Worldwide Flood 