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Sealab 2020 is an American animated television series produced by Hanna-Barbera Productions. The show premiered on NBC on September 9, 1972. The series aired its 13th and final episode on December 2, 1972, with three episodes unaired. The series appeared in reruns on USA Network as part of its "USA Cartoon Express" programming block in the 1980s and on Cartoon Network from 1992-2000. As with most Hanna-Barbera series, the show is in occasional rotation on Boomerang, the TV channel that owns the Hanna-Barbera archives.


The series takes place at Sealab, an underwater research base based on the Challenger Seamount (an underwater mountain). 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.

Among other things, the crew of Sealab faced such challenges as attacks from sharks and giant squids, potential environmental disasters, and threats to Sealab and marine life from shipping.


  • Ross Martin - Dr. Paul Williams
  • John Stephenson - Captain Michael Murphy
  • Josh Albee - Robert Murphy
  • Pamelyn Ferdin - Sally Murphy
  • William Callaway - Lieutenant Sparks
  • Jerry Dexter - Hal
  • Ann Jillian - Gail
  • Ron Pinkard - Ed
  • Olga James - Mrs. Thomas
  • Gary Shapiro - Jamie


Season 1[]

  1. "Deep Threat" - September 9, 1972
  2. "Lost" - September 16, 1972
  3. "Green Fever" - September 23, 1972
  4. "The Singing Whale" - September 30, 1972
  5. "The Shark Lover" - October 7, 1972
  6. "The Basking Shark" - October 14, 1972
  7. "Where dangers Are Many" - October 21, 1972
  8. "Backfire" - October 28, 1972
  9. "The Deepest Dive" - November 4, 1972
  10. "The Challenge" - November 11, 1972
  11. "Collision of the Aquarius" - November 18, 1972
  12. "The Capture" - November 25, 1972
  13. "The Arctic Story" - December 2, 1972

Unaired Episodes[]

  1. "Pilot" - Unaired
  2. "S.O.S.: Sealab Ocean Signal" - Unaired
  3. "Utopia of Cassidy" - Unaired

Adult Swim Parody[]

Sealab 2021

Sealab 2020 was parodied by the Adult Swim series Sealab 2021 from 2001 to 2005. The parody featured the same characters and some of the same animation from the original series. However, Sealab 2021 had a comedic tone and featured different voice actors.

Home Release[]

Sealab 2020 DVD

On May 22, 2012, Warner Archive released Sealab 2020: The Complete Series on DVD as part of their Hanna–Barbera Classics Collection. This is a manufacture-on-demand (MOD) release, available exclusively through Warner's online store and

The pilot episode "Deep Threat" is also included in the Warner Bros. Saturday Morning Cartoons: 1970s Vol. 2 DVD set.

Hanna-Barbera Series

1970 Where's Huddles?Harlem GlobetrottersJosie and the Pussycats
1971 The Pebbles and Bamm-Bamm ShowHelp!... It's the Hair Bear Bunch!The Funky Phantom
1972 The Amazing Chan and the Chan ClanWait Till Your Father Gets HomeThe Flintstone Comedy HourThe Roman HolidaysSealab 2020The New Scooby-Doo Movies
Josie and the Pussycats in Outer Space
1973 Speed BuggyButch Cassidy and the Sundance KidsYogi's GangSuper Friends
Goober and the Ghost ChasersInch High, Private EyeJeannieThe Addams Family
1974 Hong Kong PhooeyDevlinPartridge Family 2200 A.D.These Are the Days
Valley of the DinosaursWheelie and the Chopper Bunch
1975 The Tom & Jerry ShowThe Great Grape Ape Show
1976 The Mumbly Cartoon ShowThe Scooby-Doo ShowDynomutt, Dog WonderClue ClubJabberjaw
1977 The Robonic StoogesFred Flintstone and FriendsCaptain Caveman and the Teen AngelsLaff-A-LympicsCB BearsThe Skatebirds
1978 The All-New Popeye HourYogi's Space RaceGodzillaJana of the Jungle
1979 The New Fred and Barney ShowFred and Barney Meet The ThingCasper and the AngelsThe New ShmooThe Super GlobetrottersScooby-Doo and Scrappy-Doo
Fred and Barney Meet the ShmooAmigo and Friends

1980 Drak PackThe Flintstone Comedy ShowThe Fonz and the Happy Days Gang
The Richie Rich/Scooby-Doo Show
1981 Laverne & Shirley in the ArmySpace StarsTeen ForceThe Kwicky Koala ShowTrollkinsThe Smurfs
1982 The Flintstone FunniesMork and Mindy: The Animated SeriesThe Little RascalsPac-ManJokebookShirt TalesThe Gary Coleman Show
1983 The DukesMonchhichisThe New Scooby and Scrappy Doo ShowThe Biskitts
Lucky Luke
1984 SnorksChallenge of the GoBots
1985 Paw PawsYogi's Treasure HuntGaltar and the Golden LanceThe Berenstain Bears
The 13 Ghosts of Scooby-DooThe Greatest Adventure: Stories from the Bible
1986 The New Adventures of Jonny QuestPound PuppiesThe Flintstone KidsFoofurWildfire
1987 Sky CommandersPopeye and Son
1988 A Pup Named Scooby-DooThe Completely Mental Misadventures of Ed Grimley
The New Yogi Bear ShowFantastic Max
1989 The Further Adventures of SuperTedPaddington Bear