Sub-Mariner #18

A striking 1969 Marvel cover sets the stakes immediately: Namor lies collapsed on the shoreline, unable to return to the sea without facing death, while onlookers — including a young man with a guitar and a blonde woman — react with alarm behind him. Looming at the water's edge stands the green-skinned Triton, whose guest-starring role promises something well beyond an ordinary beach encounter. With cover work from Marie Severin, John Romita, and Mike Esposito, this Roy Thomas–written issue pairs two of Marvel's most compelling aquatic characters in a story that's hard to resist.