In 1944 Hans Pettersson disproved Atlantis in the Atlantic

No problem, Thorwald, I like these kinds of discussions, too. The one obvious error is that Atlantis was the size of Libya and Asia combined, no way something that large could sink. Everything else, I am ready to open to suggestions. First, I take issue with your idea that Hellanicus bears no relationship to Plato. Here is the fragment that survives:

‘Poseidon coupled with Celaeno, and their son Lycus was settled by Poseidon in the Isles of the Blessed and made immortal.’

Celaeno could be another name for Cleito. As for the Isles of the Blessed, well, that's obvious: they have long been known as the Canary Islands! The Canary Islands, off the coast of Morocco could be a remnant of the Atlantean empire, whose LANDMASS may not have been as big as Libya and Asia combined, but perhaps their SEA EMPIRE. The empire could have been this chain of islands, seaports of the coast of Morrocco, and seaports off the course of Spain. A calamity could have stricken one of these areas and the Egyptians or Phoenicians, whoever had the original story, not knowing how big Atlantis really was, thought the whole place was probably destroyed.

There are pyramids on the island of Tenerife:

Archaeologists date them more recently, but, like I said, they date everything recently! And, according to the legends, the Guanches of the Canary Islands originally told tales of their homeland having been destroyed in a calamity.

Not to mention, the Lixus ruins:

Notice how the older, larger building blocks look like they are done in a different style? Maybe other civilizations built atop them, also, the later Roman and Carthaginian constructions have mostly fallen, while the older polygonal-style walls remain in place.

I am thinking that Atlantis was an island someplace in the Atlantic that sunk, anywhere from 2,000 to 9,000 BC, and that it was the empire that was as large as Libya and Asia combined, not the territory itself. I also believe in the war that the Greeks and Atlanteans supposedly fought, which a lot of Atlantis theorists try and dismiss. I don't think they were the Sea People, but maybe there were also various Sea People that Egypt faced, some from the east, some from the west maybe in an earlier age.