The Black Sea was known to the Greeks as the Euxine Sea and according to Strabo (1.2.10), in antiquity was often simply referred to as “the sea” (pontos). It has also been known as the Scythian Sea after the people who lived on its northern shore.
It received little attention in connection with the Atlantis mystery until the 19th century when two French writers, André de Paniagua and Moreau de Jonnès, independently located Atlantis in the Sea of Azov. Some years later in 1923, R.A. Fessenden, a Canadian professor of Mathematics and Electrical Engineering wrote about the prehistoric flooding of a civilisation in the Caucasus’ region, which he linked with Plato’s Atlantis. The text of this extensive work is now available on the Internet(a).
Little was heard of the region again until 1998 when Ryan & Pitman identified the flooding of the Black Sea with Noah’s Flood. This was followed in 2001 by Ian Wilson‘s Before the Flood , which reflected a similar line of thought.
In 2004, the Bulgarian father and son oceanographers, Petko and Dimitar Dimitrov published their book, The Black Sea, the Flood and the Ancient Myths, in English, which supported much of Ryan and Pitman’s work. Unlike them, who based much of their conclusions on a study of molluscs, the Dimitrovs focused on sedimentation evidence. Their book is now available, in English, as a free pdf file(d). They also suggest that this Holocene influx into the Black Sea also triggered the Vedic Aryan migration to India(g).
Ryan and Pitman’s book unintentionally triggered the imaginations of a number of people into considering the possibility of a possible link between this inundation and the sinking of Atlantis. While Ryan and Pitman have made no such suggestion, others such as Ian Wilson have seen a distorted memory of the event as a possible inspiration for Plato’s story. In 2009, Liviu Giosan, a geologist at the Woods Hole Oceanographic Institute published a paper(e) which suggested that prior to the intrusion of the Mediterranean, the level of the Black Sea had been just 30 metres below its present level rather than the 80 metres proposed by Ryan and Pitman. This would imply a less extensive degree of flooding than previously thought. Giosan has offered a sceptical Ryan an opportunity to replicate his tests.
Although the scenario pictured by Ryan & Pitman and others is of very rapid flooding of the original smaller Black Sea, more recent studies appear to indicate a more gradual rising of the water levels. “With more data to be analysed, it supports the idea that the waters rose unnoticeably, by metres over centuries, even millennia.”(o)
Nick Thom, a British engineer, wrote The Great Flood which includes a section on the Black Sea in which he suggests that the flow of water was from the Black Sea into the Sea of Marmara rather than the other way around.
>Nearly two hundred years ago Josiah Priest in his 1835 book American Antiquities  also offered evidence from Euclid of Megara that the flow of water had been from the Black Sea to the Aegean. Apparently, Euclid heard this from Anacharsis a philosopher from the northern coast of the Black Sea related how the inflow from the rivers of Europe and Asia raised the level of the ‘Sea’ until it breached the landbridge and spilt over into the Sea of Marmara.<
More recently Christian & Siegfried Schoppe, two German researchers have also asserted that the Black Sea was the original ‘Atlantis Ocean and that Atlantis was located in that region. They have suggested that Snake Island located east of the mouth of the Danube was the probable site of Plato’s city. Their contention is that around 5500 BC a landbridge at the Bosporus was breached causing extensive flooding that created what we now know as the Black Sea. Until that time there had only been a small freshwater lake in the region. Although their book was published in German, the Schoppes have a website(b) with a useful amount of English content.
The somewhat eccentric duo of the late Flying Eagle (1920-2007) and Whispering Wind, who also advocated a Black Sea location for Atlantis(a)(f), claimed a specific site on the Strait of Kerch between the Black Sea and the Sea of Azov. Their theory was first expounded in their book in 2004. They also followed the Ryan and Pitman date of 5500 BC for the inundation of the Black Sea.
The evidence to date suggests that the flooding of the Black Sea coincided with a storegga event, which would require a catastrophe on a scale not previously considered. In a 2017 paper(i), John M. Jensen offers a range of evidence to support this contention.
A rather different approach is taken by the German researcher Werner E. Friedrich, who pushes back the expansion and the raising of the level of the Black Sea to around 10000 BC, at the end of the last Ice Age. He believes that this led to the flooding of Atlantis, which he claims to have been situated on a plain that had lain between ancient extensions of the rivers Donau and Don. Friedrich located the Pillars of Heracles in the Sea of Marmara[p.39].
A.I. Zolotukhin places Atlantis in western Crimea on his multilingual website with the inviting title of Homer and Atlantis(j).
The legendary destroyed city of Ancomah, is frequently compared to Plato’s description of the destruction of Atlantis. It was reputed to have existed in the vicinity of the ancient port city of Trabzon, which is located on the southeast coast of the Black Sea.
The concept of a Black Sea Atlantis has the support of the rather eccentric Church of Vrilology(h)!
In October 2018, an attempt was made to breathe new life into the idea of Crimea as a remnant of an Atlantis submerged under the Black Sea. Unfortunately, it offers no evidence or references in the badly translated article(k). In the same month, it was reported that the oldest intact shipwreck was discovered in the Black Sea by an Anglo-Bulgarian team. It was identified as a Greek trading vessel dated to 400 BC(l). The oxygen-free waters at the bottom of the Black Sea had preserved it and dozens of others located by the team.
In early 2019, George K. Weller, building on the theories of the Schoppes, also proposed the Black Sea as Atlantis’ home, again nominating Snake Island as the home of Mr and Mrs. Poseidon, which, before the Black Sea was flooded, would have been the central peak of their island home, as referred to by Plato(n).
One of the most comprehensive internet papers on all aspects of the history of the Black Sea can be found on the Encyclopaedia Iranica website(m).
(k) https://ktelegram.com/scientists-crimea-may-be-a-fragment-of-the-lost-city-of-atlantis/43728/ (link broken Jan. 2019)