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All Seasons

Season 1

  • S01E01 Deep Threat

    • September 9, 1972
    • NBC

    An earthquake spells danger for Sealab when the recurring mass of shock waves ruptures exposed canisters of radioactive waste.

  • S01E02 Lost

    • September 16, 1972
    • NBC

    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.

  • S01E03 Green Fever

    • September 23, 1972
    • NBC

    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.

  • S01E04 The Singing Whale

    • September 30, 1972
    • NBC

    A new world opens up for Roger Cummings, a crippled boy whose father is doing research at Sealab, when Booby befriends him and teaches him how to dive.

  • S01E05 The Shark Lover

    • October 7, 1972
    • NBC

    The entire Sealab complex is threatened by an increasing buildup of aggressive sharks in the area.

  • S01E06 The Basking Shark

    • October 14, 1972
    • NBC

    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.

  • S01E07 Where Dangers Are Many

    • October 21, 1972
    • NBC

    Ed, Gail, and Hal become "muckrakers" when ocean waters around Sealab become blanketed with layers of loosened silt.

  • S01E08 Backfire

    • October 28, 1972
    • NBC

    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.

  • S01E09 The Deepest Dive

    • November 4, 1972
    • NBC

    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.

  • S01E10 The Challenge

    • November 11, 1972
    • NBC

    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.

  • S01E11 Collision of the Aquarius

    • November 18, 1972
    • NBC

    Human complications make dealing with the mechanical ones more difficult when cargo sub "Aquarius" crashes into Seamount and endangers the Sealab complex.

  • S01E12 The Capture

    • November 25, 1972
    • NBC

    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.

  • S01E13 The Arctic Story

    • December 2, 1972
    • NBC

    The crew of Sealab 2020 ventures into the frozen Arctic to rescue two scientists who have been trapped by a blizzard while on a scientific expedition.

Additional Specials