There is an Irish tradition that names Murias as one of the four cities of the Tuatha dé Danaan(b), who came to Ireland a thousand years before the Celts.
The pre-Hellenic Greeks were known as the Danai and were, according to an Egyptian source, the descendants of Danaus. Furthermore, the Danai have been linked with the legendary Tuatha dé Danaan of Ireland as well as the Shardana of Sardinia.
(a) Atlantis, A New Concept. Pt.1, Atlantis May-June, 1974
The Sea Peoples is the name given by modern scholarship to a group of allies who caused havoc among the nations of the Eastern Mediterranean including Egypt which they invaded at least twice in the 2nd millennium BC. The phrase ‘Sea Peoples’ was never used in any ancient accounts. The coining of the term in 1855 is now generally attributed to French Egyptologist, Emmanuel de Rougé who used the term peuples de la mer (literally “peoples of the sea”) in a description of reliefs at Medinet Habu. The phrase was later popularised by another French Egyptologist, Gaston Maspero (1846-1916). Eckart Kahlhofer has recently suggested that even earlier, J. F. Champollion (1790 –1832) employed an equivalent term gens navales to describe the occupants of the invading swan-necked boats. Just a few years after Maspero the German classical scholar, Wilhelm Christ, was probably the first to identify the invading Sea Peoples with the Atlanteans(p), predating Jürgen Spanuth’s theory by the better part of a century. Christ’s idea was also supported to varying degrees by Theodor Gomperz, Spyridon Marinatos, John V. Luce, and Herwig Görgemanns.
*Cyprian Broodbank in The Making of the Middle Sea  argues that the Sea People “never actually existed as a single people. Instead small roving bands were a symptom of the collapse, not the cause, and they were blown out of proportion by Egyptian propagandists working for Ramasses III.” (ai)*
The Sea Peoples’ exact origin continues to be a matter of intense speculation(ad). The debate regarding their true identity has been ongoing for a long time and will probably continue as long as the chronologies of the Middle East are not fully harmonised to the satisfaction of all. There is some agreement that the Sea Peoples mounted two separate invasion attempts on Egypt around 1208 & 1176 BC (Facchetti & Negri).
There is a claim that the Sea Peoples also attacked Mycenaean Greece on two occasions and that Athens survived both(ae). Contrast that with the contention that there was a Mycenaean group within the Sea Peoples. The confusion surrounding the Sea Peoples is exemplified by the response to a question on the quora.com website(af).
The earliest book devoted to the Sea Peoples, that I am aware of, was Immanuel Velikovsky’s Peoples of the Sea. However, Velikovsky was more concerned with revising the chronologies of the Middle East and so focused on dating the invasion of the Sea Peoples rather than identifying their origins.
The Oxford Companion to the Bible is certain that the Sea Peoples were originally Mycenaean, who moved south, following the collapse of their civilisation at the end of the Late Bronze Age. They were repelled by the Egyptians and then moved on to the Levant where they later became known as the Philistines. A paper(ab) that also links the Philistines with the Sea Peoples from a biblical perspective is available.
A more recent (2017) paper(aa) on a conservative website suggests that the Sea Peoples were ‘early Western Europeans’.
One website(h) describes the Sea People as groups of dispossessed raiders driven by hunger following crop failures resulting from climate change. The same idea is expanded on by Lu Paradise in an extensive article(v).
A different view was expressed by the Egyptologist Robert Anderson who commented “It would seem that, rather than bands of plunderers, the Sea People were probably part of a great migration of displaced people. The migration was most likely the result of widespread crop failures and famine.”(d)
Evidence is mounting that climate change played a significant part in the Late Bronze Age collapse of civilisations in the Eastern Mediterranean region. In fact there is a school of thought that believes that the widespread societal disintegration was more the result of environmental factors rather than the depredations of the Sea Peoples(ag).
The Malagabay website published a lengthy article(t) in July 2016, offering evidence along with some conjecture, supporting the radical idea that the Sea Peoples had originated in India and having migrated westward, some of them reached the Aegean and became known as Dorians! The author of the article appears to have followed the ideas of Edward Pococke published in his India in Greece.
Bob Idjennaden along with co-author, Mebarek S. Taklit, have produced The Mysterious Sea Peoples attack Egypt, which provides an overview of the various incursions against Egypt during the 2nd millennium BC. The prominent part played by the Berbers in varying alliances that constituted the Sea Peoples is highlighted.
Eberhard Zangger argues that the Sea Peoples were survivors of the Trojan War that fled to various parts of both central and eastern Mediterranean(g). He has written further on this identification and more on the Luwian Studies website(s). Zangger claims that the Sea Peoples were an alliance of Libyans and Western Anatolian (Luwian) states(s)(y), which seems odd since Plato describes the Atlanteans as mightier than Libya and Asia combined. If Zangger is correct in identifying Troy as Atlantis, he is also implying that a part (Troy) is greater than the whole (Libya and Asia combined), Troy being part of Asia! Something is clearly wrong with his theory.
Jürgen Spanuth,not surprisingly, referred to them as the North Sea Peoplesand offered a range of evidence from Egyptian inscriptions at Medinet Habu to support this idea. This evidence includes a variety of features that Egyptians used to portray the Sea Peoples such as types of swords, shape of ships, shields and helmets as well as hair, clothing and shaving fashions. He then identified these Scandinavians as Atlanteans who later attacked Egypt. His opinion in this regard was strongly supported by Felix R. Paturi[1339.218]. Quite recently Spanuth’s ideas have also been echoed by Walter Baucum in his Bronze Age Atlantis.
Prior to the development of these Bronze Age seafarers there was a history of Northern Boat-peoples who gradually expanded globally after the last Ice Age. A paper by Andres Pääbo charts their story(k). Zach Zorich is a freelance journalist and contributing editor at Archaeology magazine. In January 2016 he wrote an article(r) that would seem to contradict the idea of Northern European ‘Sea People’ invading Egypt, for the simple reason that sailing boats were not developed in Scandinavia until around the time of the Vikings! – “The plankboats and logboats being built in northern Europe were not the most advanced watercraft of their time. The Greeks, Egyptians, and other cultures around the Mediterranean Sea used sailing ships to conduct trade, and sails wouldn’t be used in Northern Europe until the Iron Age, during the seventh or eighth century CE.”
Quite a number of writers have identified the Atlanteans as the Sea Peoples whose invasion of the Eastern Mediterranean has been recorded in some detail by the Egyptians. One such high profile identification in the 20th century was by Spyridon Marinatos.
One of the latest to join this school is Dr. Rainer W. Kühne,who not only makes the same identification, but using satellite images, he believes that he has pinpointed the capital of Atlantis in Southern Spain. His website has a list of comparisons of Atlanteans and Sea Peoples(a) which is worth consideration.
Erick Wright, a regular contributor to Atlantis Rising forums, has now concluded(b) that Atlantis was located in modern southern Turkey and that Atlanteans were among the Sea Peoples who attacked Egypt in 1200 BC.
Another Atlantis Rising forum(e)on the subject is also worth a look as is another illustrated site(f) which includes a map of the homelands of the Sea People.
According to Raffaele D’Amato & Andrea Salimbeti [1152.20], the Denyen were one of the major groups of the Sea Peoples and have been known in ancient sources by different names; Danai, Danaoi, Danaus, Danaids, Dene, Danaids, Danuna. Other have linked them with the Danaan of Irish mythology. Velikovsky has an interesting footnote in his Peoples of the Sea [758.4], which reads; “When Ramses III speaks of ‘Peoples of the Sea’ he specifies the Tkeker, the Shekelesh, the Teresh, the Weshesh and the Sherden (or Sardan) ; he specifies the Denyen as ‘Peoples of the Isles.'”
The Tuatha de Danaan invaded Ireland in prehistoric times. Having noted that Dan/Don/Danu were ancient words for water, it is not such a wild supposition that the Tuatha de Danaan were at least a constituent part of the Sea Peoples, an idea promoted by Leonardo Melis. On the other hand Egerton Sykes was of the opinion that the Tuatha de Danaan were refugees from Atlantis, an idea he expressed in his 1949 edition of Ignatius Donnelly’s Atlantis. He was convinced that Murias one of the legendary cities of the de Danann had been located in Bimini. This is highly speculative idea has failed to bear fruit as have all efforts to identify the location of the other three cities, Falias, Finias and Gorias.
Eric Cline has noted that the only member of the Sea Peoples alliance whose identity has been ‘firmly established’ is that of the Peleset who are accepted as Philistines. He also comments that identifying the Shekelesh with Sicily and the Shardana with Sardinia is based in part on the ‘consonantal similarities’[p.4].
Joseph Morris in his thesis(m) presented to the Classics Department of Florida State University in 2006 defined the Sea Peoples as “a coalition consisting of the indigenous populations of Syria-Palestine led by the neo-Hittite states.”
Federico Bardanzellu offers a number of papers on his Museo dei Dolmen website(n) in which he suggests specific homelands for many of the members of the alliance(o).
Another unexpected twist is the claim, by the discoverer of the Phaistos Disk, Luigi Pernier, that the characters used on the Disk are similar to the representations of the Sea Peoples at Medinet Habu.
Also related to the carvings at Medinet Habu is an interesting study of the Sea Peoples’ ships depicted there, by the nautical archaeologist Professor Shelley Wachsmann(aj), who also offers evidence that at least some Mycenaeans were involved with the Sea Peoples(ak).*Andrea Salimbetti’s website has a lengthy paper on Aegean Bronze Age ships(al) as well as the Sea Peoples(am) .
Another site(an) also describes the various ships of the period used by the Egyptians, Greeks and the Sea Peoples. One unusual suggestion on the same site is that some of the Sea Peoples, although allied with groups from across the Mediterranean, came from Britain and Northern Europe(ao)!*
The most radical suggestion regarding the Sea Peoples has come from Jim Allen who has drawn attention to the similarity of their headgear with that of Amazonian ‘Indians’(c).
Speculation regarding the identity of individual tribes in the federation can be found on a number of websites(i)(j). One of the most comprehensive is provided by two Italians military historians, D’Amato & Salimbeti in a 2015 booklet and on the internet(l) and both are to be highly recommended. They highlight the complexities involved in definitively identifying the members of the varying alliances that were loosely described as the ‘Sea Peoples’ over a three hundred year period.
Trude & Moshe Dothan have added another valuable book to the Sea Peoples literature with their People of the Sea, which has the interesting sub-title of The Search for the Philistines. Related to their work, is the result of recent excavations at Ashkelon, an important Philistine city, which suggests that the city had received migrants from southern Europe during the Bronze Age, who may have constituted a component of the Sea Peoples(ah). Clearly further investigation wll be required to confirm these indications.
An extensive review of all the available material relating to the Sea Peoples was also published online in October 2015(q). The MalagaBay website has also a wide-ranging illustrated article(u) about the Sea Peoples, although without reaching any firm conclusions.
The most recent addition to our knowledge of the Sea Peoples appears to be imminent with the publication of a paper in the December 2017 issue of the journal Proceedings of the Dutch Archaeological and Historical Society. Written by Frederik Woudhuizen and Eberhard Zangger, the authors offer a translation of a 3200-year-old inscription That may refer to the Sea Peoples and linking them with western Turkey. You can read more, now, on the Livescience website(z) . In a 2006 paper(ac), The Ethnicity of the Sea Peoples, Woudhuizen included some groups from the Central Mediterranean as part of the Sea Peoples.
(k) See: Archive 2337 All Three Parts
(p) Abhandlungen der bayerischen Akademie der Wissenschaften, Vol. XVII, 2nd part, Munich 1886, pp. 451-512. (German)
(q) http://www.lessonfromthepast.com/?p=941 or See Archive 2759
(aa) See Archive 3429
(ai) https://www.reddit.com/r/history/comments/c3fm5j/who_were_the_mysterious_sea_people_during_the/ (halfway down page)
Also see: Shardana