Schwamm, Daniel
Daniel Schwamm is a German commentator who has advocated the idea that a landmass between Europe and America in the Atlantic is the location of Atlantis(a).
His 2012 paper, which is taken from a 1995 book is unconvincing, involving as it does the Bermuda Triangle, the migration of Azorean lobsters and the Nasca geoglyphs.
(a) https://www.daniel-schwamm.de/index.php?pg=texte/atlantis.htm