The BEST episodes of Sealab 2020

Every episode of Sealab 2020 ever, ranked from best to worst by thousands of votes from fans of the show. The best episodes of Sealab 2020!

Sealab, an underwater research base based on the Challenger Seamount (an underwater mountain), in the year 2020 (48 years in the future at the time of broadcast). Commanded by Captain Murphy, Sealab was home to 250 people, and was dedicated to the exploration of the seas and the protection of marine life.

Last Updated: 11/30/2022Network:NBC
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Deep Threat
star
7.90
10 votes

#1 - Deep Threat

Season 1 - Episode 1 - Aired 9/9/1972

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

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The Capture
star
7.20
5 votes

#2 - The Capture

Season 1 - Episode 12 - 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.

Watch Now:AmazoniTunes
The Arctic Story
star
7.20
5 votes

#3 - The Arctic Story

Season 1 - Episode 13 - Aired 12/2/1972

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.

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The Shark Lover
star
7.00
5 votes

#4 - The Shark Lover

Season 1 - Episode 5 - Aired 10/7/1972

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

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Lost
star
6.86
7 votes

#5 - Lost

Season 1 - Episode 2 - 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.

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The Challenge
star
6.80
5 votes

#6 - The Challenge

Season 1 - Episode 10 - 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.

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Collision of the Aquarius
star
6.75
4 votes

#7 - Collision of the Aquarius

Season 1 - Episode 11 - 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.

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Backfire
star
6.40
5 votes

#8 - Backfire

Season 1 - Episode 8 - 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.

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The Deepest Dive
star
6.25
4 votes

#9 - The Deepest Dive

Season 1 - Episode 9 - 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.

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The Singing Whale
star
6.20
5 votes

#10 - The Singing Whale

Season 1 - Episode 4 - Aired 9/30/1972

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.

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The Basking Shark
star
6.20
5 votes

#11 - The Basking Shark

Season 1 - Episode 6 - 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.

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Where Dangers Are Many
star
6.20
5 votes

#12 - Where Dangers Are Many

Season 1 - Episode 7 - Aired 10/21/1972

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

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Green Fever
star
6.17
6 votes

#13 - Green Fever

Season 1 - Episode 3 - 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.

Watch Now:AmazoniTunes

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