Season 1

01 Deep Threat Episode 19th September 1972 An earthquake spells danger for Sealab when the recurring mass of shock waves ruptures exposed canisters of radioactive waste. 02 Lost Episode 216th September 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. 03 Green Fever Episode 323rd September 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. 04 The Singing Whale Episode 430th September 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. 05 The Shark Lover Episode 57th October 1972 The entire Sealab complex is threatened by an increasing buildup of aggressive sharks in the area. 06 The Basking Shark Episode 614th October 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. 07 Where Dangers Are Many Episode 721st October 1972 Ed, Gail, and Hal become "muckrakers" when ocean waters around Sealab become blanketed with layers of loosened silt 08 Backfire Episode 828th October 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. 09 The Deepest Dive Episode 94th November 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. 10 The Challenge Episode 1011th November 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. 11 Collision of the Aquarius Episode 1118th November 1972 Human complications make dealing with the mechanical ones more difficult when cargo sub "Aquarius" crashes into Seamount and endangers the Sealab complex. 12 The Capture Episode 1225th November 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. 13 The Arctic Story Episode 132nd December 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.