| 0 | The Sea Beasts from One Billion, B.C.! | cover | 1 | pencils: Dick Dillin; inks: Sheldon Moldoff; letters: Ira Schnapp | Aqualad, Aquaman, Arthur Curry, Garth |
| 2 | The Sea Beasts from One Billion B.C. | comic story | 8.67 | script: Jack Miller; pencils: Nick Cardy; inks: Nick Cardy | Aqualad, Aquaman, Arthur Curry, Garth |
| 3 | Your Passport to Amazing Adventures! | promo (ad from the publisher) | 0.33 | script: ? (promo copy); pencils: various (cover thumbnails); inks: various (cover thumbnails); colors: various (cover thumbnails) | |
| 4 | Soapy the Skin Diver | comic story | 1 | script: Henry Boltinoff; pencils: Henry Boltinoff; inks: Henry Boltinoff | Soapy |
| 5 | - | promo (ad from the publisher) | 1 | pencils: Ross Andru; inks: Mike Esposito | Rip Hunter |
| 6 | Don't Sell Nature Short! | public service announcement | 1 | script: Jack Schiff; pencils: Bernard Baily; inks: Bernard Baily | Bill |
| 7 | Chapter 2: The Creature Army | comic story | 8 | script: Jack Miller; pencils: Nick Cardy; inks: Nick Cardy | Aqualad, Aquaman, Arthur Curry, Garth |
| 8 | Slim the Skin Diver | comic story | 0.5 | script: Henry Boltinoff; pencils: Henry Boltinoff; inks: Henry Boltinoff | Slim |
| 10 | Daredevils of the Deep | text article | 1 | letters: typeset | Repton; William Lethbridge; Augustus Siebe; Rouquayrol; Denayrouse |
| 11 | Chapter 3: The Menace of the Future Fish | comic story | 7.67 | script: Jack Miller; pencils: Nick Cardy; inks: Nick Cardy | Aqualad, Aquaman, Arthur Curry, Garth |
| 12 | - | statement of ownership | 0.33 | script: J. S. Liebowitz | |
| 13 | Floating Tanks! | comic story | 1 | | |