| 0 | The Creatures from the Sub-World! | cover | 1 | pencils: Howard Purcell; inks: Howard Purcell; colors: Jack Adler; letters: Ira Schnapp | Sea Devils [Dane Dorrance; Judy Walton]; Jared Hood |
| 2 | The Creatures from the Sub-World | comic story | 7.67 | pencils: Howard Purcell; inks: Sheldon Moldoff; letters: Stan Starkman | Sea Devils [Dane Dorrance; Biff Bailey; Judy Walton; Nicky Walton] |
| 4 | Marine Almanac! | comic story | 0.67 | | |
| 5 | - | promo (ad from the publisher) | 0.33 | pencils: Curt Swan; inks: George Klein; letters: Ira Schnapp | |
| 6 | Learn from Your Hobbies! | public service announcement | 1 | script: Jack Schiff; pencils: Sheldon Moldoff; inks: Sheldon Moldoff; letters: Ira Schnapp | |
| 7 | [The Creatures from the Sub-World] Part 2 The Sea Devil Creatures | comic story | 7.67 | pencils: Howard Purcell; inks: Sheldon Moldoff; letters: Stan Starkman | Sea Devils [Dane Dorrance; Judy Walton; Nicky Walton; Biff Bailey]; Jared Hood |
| 9 | - | comic story | 0.5 | script: Henry Boltinoff; pencils: Henry Boltinoff; inks: Henry Boltinoff; letters: Henry Boltinoff | Magic Genie |
| 10 | The Whole Batman Family! | promo (ad from the publisher) | 0.5 | pencils: Sheldon Moldoff; inks: Stan Kaye, Curt Swan; letters: Ira Schnapp | |
| 11 | - | letters page | 1 | script: George Kashdan; pencils: Ross Andru; inks: Mike Esposito | |
| 12 | - | promo (ad from the publisher) | 1 | pencils: Russ Heath; inks: Russ Heath | |
| 13 | - | comic story | 0.67 | script: Henry Boltinoff; pencils: Henry Boltinoff; inks: Henry Boltinoff; letters: Henry Boltinoff | Shorty |
| 14 | - | statement of ownership | 0.33 | letters: typeset | |
| 15 | [The Creatures from the Sub-World] Part 3 The Doom of the Crusher Plant | comic story | 8.67 | pencils: Howard Purcell; inks: Sheldon Moldoff; letters: Stan Starkman | Sea Devils [Dane Dorrance; Nicky Walton; Biff Bailey; Judy Walton]; Jared Hood |