Sea Hunt
Mark of the Octopus
TV Flash files “Mark of the Octopus” as hour 4 of 155 in the TV Flash guide — Sea Hunt (1958–1961) on Syndication, season 1, episode 4, aired 1958-02-01, 30 min.
From the desk
How this hour is filed
This leaf is S01E04: listed hour 4 of 155 in the Sea Hunt guide, hour 4 of 39 in season 1. It aired 1958-02-01 (30 min). The listed hour before it is “Rapture of the Deep” (S01E03). Next is “The Sea Sled” (S01E05).
Viewer FAQ
Where does Mark of the Octopus sit in the Sea Hunt guide?
S01E04 is listed hour 4 of 155 — hour 4 of 39 in season 1, season 1 episode 4.
When did Sea Hunt S01E04 air?
Mark of the Octopus aired 1958-02-01 and is listed at 30 minutes.
Where should I start?
Start with Bridges underwater. Mike Nelson's assignments and the real diving footage are the show; you have the form in one dive.
In the series
Why this series still plays
Sea Hunt put Lloyd Bridges in scuba gear and made divers of a generation. Syndicated underwater adventure that popularized scuba as TV spectacle. In 2026 it is worth watching as location action before cheap CGI, plus the family-business lore of Beau and Jeff hanging around a set that actually went underwater.
The silhouette is a man in scuba, tanks on the back, California light turning the Pacific into a second red carpet nobody called a carpet. Sea Hunt (first-run syndication, 1958–1961) put Lloyd Bridges in the water for 155 episodes produced by Ivan Tors, real diving footage and aquatic stunts as the whole look. Ex-Navy frogman Mike Nelson takes dangerous underwater assignments off the coast. Kids watching in 1958 grew up wanting tanks for Christmas; the series is credited with boosting public interest in scuba.…
Filed against
- Lloyd Bridges as Mike Nelson
Lloyd Bridges put a generation in scuba as Mike Nelson on Sea Hunt — syndicated underwater adventure that made location action the spectacle and the ocean a weekly set. No cheap CGI, just a man and a tank. TV Flash files him as 1950s…