Season 1

1. Ten Minutes of Eternity

Debut: In the premiere episode a man (Chris Robinson) seeking to steal a new invention by Primus' sidekick is thwarted when his two man sub gets trapped when a mining explosion causes an underwater rock fall. The new invention is a robot that allows mining at up to 350 feet below sea level depth. With the aid of the new robot, Primus rescues the would be thief.

1971-09-15 • 30 min

2. Deepest of the Deep

1971-09-22 • 30 min

3. Trial and Terror

1971-09-29 • 30 min

4. Kiss of Life

1971-10-07 • 30 min

5. Underwater Getaway

1971-10-21 • 30 min

6. The Phantom Horse

1971-10-28 • 30 min

7. Bearer of Light

1971-11-03 • 30 min

8. Oil Rig

1971-11-10 • 30 min

9. Breaking Point

1974-11-24 • 30 min

10. The 65th Minute

1971-12-01 • 30 min

12. Blade of Fire

1971-12-08 • 30 min

13. Tektite #1

1971-12-15 • 30 min

14. 49 Sharks

1971-12-22 • 30 min

15. The Sea is Boiling Hot

1971-12-29 • 30 min

16. Death Tide

1972-01-05 • 30 min

17. Sea Serpent

1972-01-12 • 30 min

18. The Sniper

1972-01-19 • 30 min

19. The Steel Fish

1972-04-21 • 30 min

20. Black Diamonds

1972-04-28 • 30 min

21. Infrared

1972-05-05 • 30 min

22. Nuclear Black Market

1972-05-12 • 30 min

23. The Black Hole

1972-05-19 • 30 min

24. Trapped, Part One

1972-05-26 • 30 min

25. Trapped, Part Two

1972-06-02 • 30 min

26. The Net

1972-06-09 • 30 min