What Atlantis is
Mort Weisinger and Paul Norris referenced Atlantis briefly in More Fun Comics #73 (November 1941) alongside Aquaman’s debut. The 1941 framing was minimal; Atlantis was Aquaman’s home but received only sketch-level treatment. The deep worldbuilding came eighteen years later in Adventure Comics #260 (May 1959), where Robert Bernstein and Ramona Fradon established Atlantis as a fully-developed undersea civilization with culture, government, and history.
Peter David’s 1993 Aquaman: Time and Tide miniseries and his subsequent ongoing run reframed Atlantis with darker political stakes and the start of the Aquaman-as-political-leader-of-Atlantis framing. Geoff Johns’s New 52 Aquaman run further developed the broader undersea geopolitics, introducing or expanding subordinate kingdoms (Xebel, the Trench) and cementing the political-thriller framework that the 2018 James Wan film adapted.
The 2018 Aquaman film extensively depicted Atlantis in live-action with substantial production design. The film’s Atlantis grossed over $1 billion globally, making it one of the most-recognized DC live-action settings.
Collector context
More Fun Comics #73 is the canonical Aquaman and Atlantis first-appearance key. CGC 9.0 and above is in the high five to low six figures. Atlantis’s first-appearance value is folded into the Aquaman first-appearance value.
Adventure Comics #260 (the first sustained Atlantis worldbuilding) is recognized as a Silver Age Aquaman origin key and trades in the four-to-low-five-figure range at CGC 9.0 and above.