6.0/1025 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.
Director: N/A
Writer: N/A
5.5/1017 votes#2 - 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.
Director: N/A
Writer: N/A
7.1/1019 votes#3 - 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.
Director: N/A
Writer: N/A
6.2/1015 votes#4 - The Singing Whale
Season 1 Episode 4 - 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.
Director: N/A
Writer: N/A
6.2/1016 votes#5 - 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.
Director: N/A
Writer: N/A
6.0/1015 votes#6 - 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.
Director: N/A
Writer: N/A
5.9/1014 votes#7 - 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
Director: N/A
Writer: N/A
5.5/1014 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.
Director: N/A
Writer: N/A
6.0/1013 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.
Director: N/A
Writer: N/A
6.1/1013 votes#10 - 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.
Director: N/A
Writer: N/A
6.1/1012 votes#11 - 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.
Director: N/A
Writer: N/A
5.2/1011 votes#12 - 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.
Director: N/A
Writer: N/A
- 6.7/1013 votes
#13 - The Artic Story
Season 1 Episode 13 - 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.
Director: N/A
Writer: N/A
The Best Episodes of Sealab 2020 Season 1
Every episode of Sealab 2020 Season 1 ranked from best to worst. Discover the Best Episodes of Sealab 2020 Season 1!
Commanded by Captain Michael Murphy, Sealab is dedicated to the exploration of the seas and the protection of marine life. Among other things, the crew...
Genres:Sci-Fi & FantasyAnimationFamilyKids
Network:NBC
Season 1 Ratings Summary
"Deep Threat" is the best rated episode of "Sealab 2020" season 1. It scored 6/10 based on 25 votes. Directed by N/A and written by N/A, it aired on 9/9/1972. This episode is rated 0.5 points higher than the second-best, "Lost".