DON'T FORGET THE DIVER!
All you ever needed to know about Lloyd Bridges and "Sea Hunt".
"Sea Hunt" episode guide here.
The original pilot was a Giant Octopus story, but I'm particularly smitten by Season One, Episode Eight - "Sonar Queen": "Hired to test a new electronic fish-finder, Mike encounters a village where every fish in the vicinity has disappeared..." Whooooooeoooeoooo...spooky! Where all dem fish gone!?
There was also a "Sea Hunt" remake in the 80's featuring Ron "Tarzan/Doc Savage" Ely.
...and Ely also starred in the 60's TV show "The Aquanauts". Weird, huh?