Sea Hunt
Sonar Story
TV Flash files “Sonar Story” as hour 127 of 155 in the TV Flash guide — Sea Hunt (1958–1961) on Syndication, season 4, episode 10, aired 1961-03-11, 30 min.
From the desk
How this hour is filed
This leaf is S04E10: listed hour 127 of 155 in the Sea Hunt guide, hour 10 of 38 in season 4. It aired 1961-03-11 (30 min). The listed hour before it is “Hot Tracer” (S04E09). Next is “Amigo” (S04E11).
Catalog log
Broadcast listing — not a TV Flash recap.
To stop a gang of heroin smugglers operating underwater, Mike joins forces with Dr. Briggs, a sonar expert.
Viewer FAQ
Where does Sonar Story sit in the Sea Hunt guide?
S04E10 is listed hour 127 of 155 — hour 10 of 38 in season 4, season 4 episode 10.
When did Sea Hunt S04E10 air?
Sonar Story aired 1961-03-11 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…