Sub-Mariner #3

From the summer of 1968 comes this eye-catching chapter of Marvel's revived Sub-Mariner series, with cover art by John Buscema and Frank Giacoia that makes an immediate impression: Namor and a green-skinned Triton are locked in a desperate struggle against the Leviathan, a massive, seaweed-draped sea creature that dominates the entire cover. The tagline "Namor and Triton — Terrific Together!" promises an underwater team-up with real stakes, as both figures strain against the beast's overwhelming bulk. Roy Thomas scripts the story titled "On a Clear Day You Can See... the Leviathan!" — a title that's both playful and ominous, perfectly capturing the offbeat charm of late-'60s Marvel at its most adventurous.