| 0 | The Impossible Maritime Menaces! | cover | 1 | pencils: Howard Purcell; inks: Howard Purcell; letters: Ira Schnapp | Sea Devils [Dane Dorrance; Judy Walton; Nicky Walton; Biff Bailey] |
| 2 | The Impossible Maritime Menaces, Chapter 1 | comic story | 7.67 | script: Arnold Drake; pencils: Howard Purcell; inks: Sheldon Moldoff; letters: Stan Starkman | Sea Devils [Dane Dorrance; Judy Walton; Biff Bailey; Nicky Walton] |
| 3 | Follow the Adventures of Batman and Robin... | promo (ad from the publisher) | 0.33 | pencils: Carmine Infantino, Sheldon Moldoff; inks: Joe Giella; letters: Ira Schnapp | |
| 4 | The Underwater World | cartoon | 1 | pencils: Henry Boltinoff; inks: Henry Boltinoff; letters: Henry Boltinoff | |
| 5 | Names Do Hurt! | public service announcement | 1 | script: Jack Schiff; pencils: Sheldon Moldoff; inks: Sheldon Moldoff; letters: Ira Schnapp | |
| 6 | Ride a Sea-Going Thunderbolt | promo (ad from the publisher) | 1 | pencils: Irv Novick; inks: Irv Novick; letters: Ira Schnapp | |
| 7 | Chapter 2: For Sale -- the Earth | comic story | 7.67 | script: Arnold Drake; pencils: Howard Purcell; inks: Sheldon Moldoff; letters: Stan Starkman | Sea Devils [Dane Dorrance; Biff Bailey; Judy Walton; Nicky Walton]; K'Poora |
| 8 | You Demanded It, and Here It Is... | promo (ad from the publisher) | 0.33 | pencils: Bob Brown; inks: Bob Brown; letters: Ira Schnapp | |
| 11 | - | promo (ad from the publisher) | 1 | pencils: Russ Heath; inks: Russ Heath | |
| 12 | - | letters page | 1 | script: George Kashdan; pencils: Ross Andru; inks: Mike Esposito | |
| 13 | Chapter 3: The Alien Allies | comic story | 8.67 | script: Arnold Drake; pencils: Howard Purcell; inks: Sheldon Moldoff; letters: Stan Starkman | Sea Devils [Dane Dorrance; Judy Walton; Nicky Walton; Biff Bailey]; K'Poora |
| 14 | - | promo (ad from the publisher) | 0.33 | pencils: Nick Cardy, Bill Ely; inks: Nick Cardy, Bill Ely; letters: Ira Schnapp | |