The BEST Episodes of Sealab 2021

Every episode ever - ranked by fan votes!

Last Updated: Dec 22, 2019

Network: Adult Swim

The year is 2021. Deep below the ocean's surface, looms a vast, magnificently high-tech compound: Sealab. A multi-national scientific station with an annual budget in the trillions, dedicated to the research and exploration of man's final frontier... Sealab's crew is charged with exploring the possibility of underwater colonization. As the Earth's surface, by this time, has gotten just generally crowded, hot, and icky. However, as most government-funded agencies usually are, Sealab is manned by a motley collection of malcontents and screw-ups who were unfit for work in the private sector. They really don't get any research done, but instead spend their time bickering among themselves or just plain goofing off. The crew have manipulated their luckless leader, Captain Murphy, into submission, and are content to ride the government clock, raking in fat, hazardous-duty paychecks.

Return of Marco

#1 - Return of Marco

Season 4 - Episode 11 - Aired Dec 12, 2004

Marco died three episodes ago. What's he doing back? Later, Marco and Debbie sing Antônio Carlos Jobim's "Waters of March" in Portuguese.

star 9.17
53 votes
Sharko's Machine

#2 - Sharko's Machine

Season 4 - Episode 10 - Aired Dec 5, 2004

Marco's illegitimate son applies for a job on Sealab. Can he pass the civil service exam with Debbie and Quinn helping?

star 8.98
83 votes

#3 - Vacation

Season 3 - Episode 2 - Aired Jun 2, 2003

Dr. Quinn forcibly takes a well-deserved vacation, inside Sealab's walls, the crew attempts to find out what he's doing.

star 8.88
95 votes
Der Dieb

#4 - Der Dieb

Season 2 - Episode 4 - Aired May 12, 2002

A series of unexplained thefts leads Murphy to declare "Martian law". In the ensuing madness, everyone ends up blaming Quinn for all the thefts.

star 8.52
219 votes
All That Jazz

#5 - All That Jazz

Season 1 - Episode 9 - Aired Oct 28, 2001

Murphy is stuck under a soda machine. To make matters worse, everyone else is out at a concert and can't help him! To make matters worse still, who should happen upon poor, defenseless Murphy but an angry scorpion and a tooth-collecting maintenance robot?

star 8.44
209 votes
Writers: Adam Reed, Chris Ward, Dave Willis, Matt Maiellaro, Matt Thompson
Return to Oblivion

#6 - Return to Oblivion

Season 3 - Episode 5 - Aired Nov 16, 2003

A network executive audits the set of the hard-hitting action drama Sealab 2021, with hopes of somehow salvaging the dwindling series.

star 8.31
81 votes
Green Fever

#7 - Green Fever

Season 4 - Episode 9 - Aired Nov 28, 2004

Zombies ravage Sealab as Debbie plans her (fifth) 30th birthday party.

star 8.28
80 votes
Frozen Dinner

#8 - Frozen Dinner

Season 3 - Episode 11 - Aired Dec 31, 2003

The Sealab crew attempts a daring rescue mission to Ice Station Zebra, one of whose inhabitants has turned to cannibalism. They are accompanied by a German who "came with the sub," bears more than a passing resemblance to Jürgen Prochnow and is given to firing his pistol inside the sub and shouting "Sieg Heil, Cornelius Drebbel!" Unfortunately, the two inhabitants of Ice Station Zebra cannot be rescued due to a lack of wetsuits, thanks to Debbie packing an attractive dress for herself instead.

star 8.28
57 votes
The Policy

#9 - The Policy

Season 2 - Episode 5 - Aired Nov 3, 2002

After running up thousands of dollars in credit card debt, Murphy can't come up with a way to pay for it all...until Sparks intervenes. He takes out life insurance policies on the crew before sending them on a fatal fool's errand, and proceeds to kill Captain Murphy with a homemade tesla coil in the hot tub. However, Captain Murphy grabs Sparks as he is being electrocuted, killing Sparks as well.

star 8.15
193 votes
Craptastic Voyage

#10 - Craptastic Voyage

Season 4 - Episode 4 - Aired Jul 11, 2004

Quinn, White Debbie, and "He Who Smokes Bitches" Stormy Waters venture deep into Tornado Shanks to destroy a malignant tumor in Captain Shanks' head.

star 8.09
54 votes

#11 - Chickmate

Season 1 - Episode 4 - Aired Sep 2, 2001

Debbie wants to have a baby so she starts to interview the crew to see who will be the father. Marco makes time with the other Debbie (aka "Black" Debbie).

star 8.09
175 votes
I, Robot

#12 - I, Robot

Season 1 - Episode 2 - Aired Dec 30, 2000

Sealab is in danger, but nobody cares. The crew wonders what it would be like to be robots, while Quinn tries to deal with the impending disaster.

star 7.97
320 votes
Writers: Adam Reed, John J. Miller, Matt Thompson
Isla de las Chupracabras

#13 - Isla de las Chupracabras

Season 4 - Episode 7 - Aired Nov 14, 2004

A team-building exercise goes horribly wrong when the Sealab crew are attacked by Chupacabras.

star 7.96
55 votes
Feast of Alvis

#14 - Feast of Alvis

Season 2 - Episode 11 - Aired Dec 29, 2002

Capt. Murphy's attempts at a happy Alvistide go awry thanks to non-Alvian crew members, an uncooperative electrician, and Alvis himself "crapping the buffet".

star 7.96
207 votes

#15 - Casinko

Season 5 - Episode 1 - Aired Mar 6, 2005

As it turns out Sealab was built on an ancient Indian burial ground and is now sinking into the ocean floor. The only hope to save Sealab is John Bear, Sealab's resident Native American. But in order to save Sealab Shank's must agree to turn the Mess Hall into a casino which he does. But once the casino opens John Bear still won't stop the sinking (or let Debbie have a lounge show).

star 7.95
57 votes
Swimming in Oblivion

#16 - Swimming in Oblivion

Season 2 - Episode 3 - Aired May 5, 2002

Behind the scenes at the chaotic "set" of Sealab 2021. In this episode, the voice actors use their own names rather than the characters'. The episode is a parody of Living in Oblivion by Tom DiCillo.

star 7.93
187 votes

#17 - Brainswitch

Season 3 - Episode 1 - Aired May 26, 2003

An accident leaves Quinn comatose and Stormy allegedly smarter. Have they really switched brains?

star 7.91
125 votes

#18 - Predator

Season 1 - Episode 5 - Aired Sep 16, 2001

A flesh-eating invisible monster has invaded the Sealab and is killing everyone. The crew tries to lure it into a trap by having Dolphin Boy wear a life-jacket made of meat.

star 7.89
180 votes
Writers: Adam Reed, Chris Ward, John J. Miller, Matt Thompson
Tourist Season

#19 - Tourist Season

Season 3 - Episode 7 - Aired Nov 30, 2003

Captain Murphy opens Sealab to tourists, eventually prompting Dr. Virjay to renounce his religion, and begin to eat meat from cows.

star 7.86
58 votes

#20 - ASHDTV

Season 4 - Episode 1 - Aired Jun 20, 2004

A delivering mishap and some dishonesty on Sparks' part pockets Sealab a brand new Asteroid Smasher/High-definition Television. Unfortunately, the ASHDTV was supposed to go to Spacelab so they could destroy an asteroid hurtling towards the earth.

star 7.86
63 votes
Murphy Murph and the Feng Shui Bunch

#21 - Murphy Murph and the Feng Shui Bunch

Season 1 - Episode 10 - Aired Dec 9, 2001

Murph blows the whole Sealab budget on making the place "Feng Shui" paying a scam artist to redecorate the whole place.

star 7.84
217 votes
Writers: Adam Reed, Chris Ward, Dave Willis, John J. Miller, Matt Maiellaro, Matt Thompson

#22 - Butchslap

Season 5 - Episode 2 - Aired Mar 13, 2005

Marco convinces Debbie to give up her "questionable" ways through a pep talk, leading her to find religion and dump Quinn. Meanwhile, Sparks recognizes the pep talk from a 60's show, which leads a drunken Quinn to sic the network on the fugitive TV star Marco.

star 7.80
51 votes

#23 - Stimutacs

Season 2 - Episode 2 - Aired Apr 28, 2002

Sparks starts pushing a new, "mostly kelp" energy pill that proves to be highly addictive.

star 7.80
263 votes
Moby Sick

#24 - Moby Sick

Season 5 - Episode 6 - Aired Apr 11, 2005

Abalon, a terminally ill whale, comes to Sealab and asks Doctor Quinn to kill him. While Quinn wonders whether or not he could end a life Stormy recognizes Abalon as the star of a show called ‘I Gotta Have That Dick' and starts bugging him with fan fics. While Quinn examines Abalon's whale cancer Marco accidentally eats some of it and is inspired to create his own drink called F-YEAH!

star 7.78
51 votes

#25 - 7211

Season 2 - Episode 10 - Aired Dec 15, 2002

A nuclear submarine crashes outside the station, and the crew of Sealab (in a rare occurrence) must work quickly to stop an environmental disaster from happening.

star 7.77
207 votes