Aired: 9/9/1972
An earthquake spells danger for Sealab when the recurring mass of shock waves ruptures exposed canisters of radioactive waste.
Aired: 9/16/1972
An approaching red tide has more than the fish in a panic - the murky oceanic flux, which initiates a process of oxygen depleting, could cut off the life support system of Sealab.
Aired: 9/23/1972
A red alert is signaled after a supply ship's concrete mooring, cast off during a hurricane, unwittingly strikes Sealab's control dome and splits a major section of the shell.
Aired: 9/30/1972
A new world opens up for Roger Cummings, a disabled boy whose father is doing research at Sealab, when Bobby befriends him and teaches him how to dive.
Aired: 10/7/1972
The entire Sealab complex is threatened by an increasing buildup of aggressive sharks in the area.
Aired: 10/14/1972
When a space probe loses its parachute during reentry and plummets out of sight into the ocean's depths, the staff of Sealab is called on to locate it.
Aired: 10/21/1972
Ed, Gail, and Hal become "muckrakers" when ocean waters around Sealab become blanketed with layers of loosened silt
Aired: 10/28/1972
Ed considers resigning from Sealab after Dr. Williams grants permission to a submarine geologist to use explosives on Seamount for the purpose of oil exploration.
Aired: 11/4/1972
Hal, Ed, and Gail plunge to the lowest depths of the ocean in a special crystal bell to plant a second seismographic signaling device after the first one mysteriously disappears.
Aired: 11/11/1972
An archaeologist enlists the aid of Hal, Ed, and Gail in removing ancient Mayan gold artifacts buried in the hold of a vessel sunk during WWI.
Aired: 11/18/1972
Human complications make dealing with the mechanical ones more difficult when cargo sub "Aquarius" crashes into Seamount and endangers the Sealab complex.
Aired: 11/25/1972
Although the Sealab crew doesn't like helping Mr. Harlan trap two animals from every species on the Seamount for a new aquarium, they carry out the task because of orders.
Aired: 12/2/1972
The crew of Sealab ventures into the frozen Arctic to rescue two scientists who have been trapped by a blizzard while on a scientific expedition.
