Isle of Man
Poseidon was one of the twelve Olympians of ancient Greek mythology. He was also the Greek god of the sea who was given the island of Atlantis as his realm. The Romans later knew Poseidon as Neptune. Herodotus (II.50.2) claimed that the Greek gods were imported from Egypt with a few exceptions including Poseidon. Some have suggested that the ancient Egyptian god Sobek was the equivalent of Poseidon, but the connection seems rather tenuous.
>Eire Rautenberg has proposed that Poseidon was not originally a Greek god but instead came from the Libyans of North Africa(b).<
Some writers have suggested that Noah was to be equated with Poseidon. His symbol was a trident.
Poseidon is also credited with having been the first to tame horses. Others, such as Nienhuis, have equated Poseidon with Sidon referred to in Genesis 10:15.
The Phoenician sea god Melqart is frequently seen as the son of Poseidon whereas others, such as Jonas Bergman, consider them to be identical. The Nordic sea god Aegir is also seen as a mirror of Poseidon. In Portugal, Saint Bartholomew is considered a Christianised Poseidon, where statues of him are similar to those of Poseidon including a trident.
The Celtic god of the sea was known as Manannán Mac Lir who is frequently associated with the Isle of Man in the Irish Sea.
When the Greek gods divided the world among themselves, Poseidon received Atlantis as his share. He fell in love with a mortal, Clieto, who bore him five sets of twin boys, of whom Atlas was the firstborn and primus inter pares. Atlantis was then shared between them.
In December 2017, Anton Mifsud, Malta’s leading Atlantologist, published an intriguing suggestion(a) , when he pointed out that on the ceiling of the Sistine Chapel, painted by Neo-Platonist Michelangelo, something odd can be perceived in the central panel, known as The Creation of Adam. There, we find ‘god’ surrounded by five pairs of flightless ‘cherubs’. This is reminiscent of Poseidon’s five pairs of twin sons. Atlantis. However, Christian iconography invariably shows cherubs with wings, so it begs the question; why this departure from the norm? Mifsud contends that together with other aspects of the fresco, this depiction is closer to Plato’s ‘god’, Poseidon, than that of the Mosaic creator in Genesis!
(b) Poseidon is not a Greek god! – Atlantisforschung.de (atlantisforschung-de.translate.goog) *
Paul Dunbavin (1954- ) is a data and business analyst. “His interest for over 35 years has been cross-disciplinary research into prehistory, which he has occasionally published in his books and various articles and papers.”
He is the author of controversial but well-researched books relating to the ancient history of Britain. In one of these, he identified the Picts of Scotland as being originally from the Baltic. In another he investigated the possible origins of Plato’s story of Atlantis. Using mythological, geological and archaeological sources he concluded that an asteroid or comet collided with the Earth around 3100 BC resulting in the tilting of the Earth’s axis. Dunbavin argued that this impact caused dramatic climate and sea-level changes that led to the submergence of a Neolithic civilisation on a low-lying plain off the coast of Wales. He believed that this destruction was the inspiration for the Atlantis legend. David Furlong claimed to have independently arrived at the same conclusion.
In 2005, Dunbavin published another volume on ancient catastrophes and their possible connection with cometary impacts or near-collisions. In this connection, he briefly refers to the work of George F. Dodwell.
In 2019, Dunbavin expanded his website, which also includes a more extensive review of Dodwell’s work(c). 2019 also saw the publication of his latest book, Towers of Atlantis . There is more information about this and his other books on his website(a), which also includes links to other related sites(b).
>Paul Dunbavin in his Atlantis of the West  proposed that the Coligny Calendar might be considered a lunisolar calendar. Some years later in 2005 he returned to the subject in Under Ancient Skies  and devoted Chapter 5 plus Appendices A & B to a discussion of Critias 119d, which relates how the kings of Atlantis met alternatively every five and six years. Dunbavin suggests that this is reflected in the Coligny Calendar and that it possibly had antecedents that would bring its functions back to the time of Bronze Age Atlantis(d), if not earlier(e). Dunbavin’s reaction to the Calendar is best quoted – Now it is this passage more than any other that convinces the present author (Dunbavin) of the authenticity of the Atlantis myth“. He touches on this matter again in Towers of Atlantis  and Prehistory Papers .<
Once again, Dunbavin has returned to the subject of the British Isles during the Neolithic period and their possible association with Plato’s story of Atlantis. He draws on the ancient Egyptian concept of a paradisaical afterlife comparable with the Greek ‘Elysian Fields’, both believed to be located in the far west. These notions are seen by Dunbavin to have possible parallels in Plato’s description of the Plain of Atlantis.
The author highlights the value of mythology, which he employs in conjunction with classical writers such as Herodotus, Diodorus Siculus as well as others to lead us to his considered belief that the Irish Sea before its eventual inundation after the last Ice Age had been home to the Plain of Atlantis, stretching from the island of Anglesea to the Isle of Man. This book should be read in conjunction with his previous offering, Atlantis of the West. Rather than wild speculation, Dunbavin has again offered evidence, although subjectively interpreted, which offers a coherent hypothesis.
Dunbavin updates his website from time to time, the latest was November 2019. Anyone interested in his theories should check his site regularly.
In 2020, Dunbavin published Prehistory Papers, “which provides a permanent repository for the various articles or papers originally published on the author’s website; together with some older articles; they expand on the cross-disciplinary research in the author’s earlier books.“
(d) e5604c_465f3f96346041fb94f8e5f960804f1f.pdf (filesusr.com) *
(e) (99+) (PDF) The Neolithic Calendar in Plato’s Critias | Paul Dunbavin – Academia.edu *
Avalon is the legendary resting place of Britain’s King Arthur. Tradition has it that it was also famous for its apples and this feature led some to link it with the legend of the Hesperides considered another name for Atlantis. This linkage of Avalon with Atlantis is extremely tenuous. The apple connection is also suggested by the Welsh for Avalon which is Ynys Afallon, possibly derived from afal, the Welsh for apple.
Pliny the Elder in his Naturalis Historiae (xxxvii.35) named Helgoland as ‘insulam Abalum’, which has been suggested as a variant of Avalon. Other locations such as Sicily and Avallon in Burgundy have been also been proposed. A series of YouTube clips(a) bravely links Avalon, Mt.Meru and Atlantis, which is supposedly situated in the Arctic!
The isle of Lundy in Britain’s Bristol Channel has been speculatively identified as Avalon(b).>Other leading contenders are the Isle of Man and Glastonbury(c).<
(c) Avalon: A Real Island Obscured by Legend, or Just a Legendary Island? | Ancient Origins (ancient-origins.net) *