The BEST Episodes of Sealab 2021

Every episode ever - ranked by fan votes!

Last Updated: Mar 9, 2020

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

The much-ballyhooed return of Marco finally occurs in this eponymously-titled episode, with Marco playing the titular Marco. Marco, Sharko. Sharko, Marco. We'll just leave you two to get acquainted. Also, don't drink that pee.

star 9.04
54 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 8.91
84 votes
Vacation

#3 - Vacation

Season 3 - Episode 2 - Aired Jun 2, 2003

Dear Dr. Quinn: Well, I hope you are having a great vacation and doing lots of fun things. Yes, have a great time. Oh, wait. Never mind. Because you're not going ANYWHERE! Love, Murphy.

star 8.82
96 votes
Der Dieb

#4 - Der Dieb

Season 2 - Episode 4 - Aired May 12, 2002

When things start going missing on Sealab, fingers start to point and tempers start to flare. It'll be up to Murphy and his cadre of Martian Knights to quell the chaos. Or, more accurately, to exacerbate the existing chaos into something much more chaotic. But in the end, there might be cake.

star 8.50
220 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 8.43
210 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 8.26
82 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 8.23
81 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 8.21
58 votes
The Policy

#9 - The Policy

Season 2 - Episode 5 - Aired Nov 3, 2002

In a fevered spurt of conspicuous consumption, Murphy runs up a hundred grand in credit card bills. And let's face it, he just doesn't have that kind of money. So he sends his unwilling crew in search of sunken treasure. Sharks? Sure. Lack of oxygen? You bet. And hey, isn't that dynamite over there? Well, I'll be darned.

star 8.14
194 votes
Chickmate

#10 - 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 8.06
176 votes
Craptastic Voyage

#11 - Craptastic Voyage

Season 4 - Episode 4 - Aired Jul 11, 2004

When Shanks refuses treatment for a festering, pulsing head-tumor, the crew decides to dust off the old shrink ray and then basically reenact the plot of a 1960's sci-fi movie starring that actress.

star 8.05
55 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 7.96
321 votes
Writers: Adam Reed, John J. Miller, Matt Thompson
Casinko

#13 - 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
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 7.93
208 votes
Swimming in Oblivion

#15 - Swimming in Oblivion

Season 2 - Episode 3 - Aired May 5, 2002

Well, a summary of this episode would, in its essence, be a spoiler. But get ready to see some of your old favorites (and some soon-to-be favorites) in this season finale: Chopper Dave. The Bebop Cola Robot. The Forest Ranger Guy. Skanky Darlene. The Martian Quinn. And who can forget Debbie's boobies?

star 7.92
188 votes
Isla de las Chupracabras

#16 - Isla de las Chupracabras

Season 4 - Episode 7 - Aired Nov 14, 2004

A team-building exercise goes horribly awry when the crew of Sealab finds themselves on the dreaded "Isla de Las Chupacabras!" In English, that's "Island of the Goatsuckers." And the episode is in English.

star 7.89
56 votes
Predator

#17 - 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 7.88
181 votes
Writers: Adam Reed, Chris Ward, John J. Miller, Matt Thompson
Brainswitch

#18 - Brainswitch

Season 3 - Episode 1 - Aired May 26, 2003

When something majorly weird happens, involving an explosion, something else majorly weird happens, involving Quinn's and Stormy's brains.

star 7.88
126 votes
Murphy Murph and the Feng Shui Bunch

#19 - 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 7.83
218 votes
Writers: Adam Reed, Chris Ward, Dave Willis, John J. Miller, Matt Maiellaro, Matt Thompson
Tourist Season

#20 - Tourist Season

Season 3 - Episode 7 - Aired Nov 30, 2003

A horde of tourists descends upon Sealab. There are some fatalities. Doctor Virjay makes a startling (and delicious) discovery about meat. Yummy!

star 7.81
59 votes
ASHDTV

#21 - ASHDTV

Season 4 - Episode 1 - Aired Jun 20, 2004

What's better than a TV? An HDTV. And what's better than that? An ASHDTV. And what does the AS stand for? You probably guessed "[adult swim]" but it's "Asteroid Smasher." And that's what the crew of Sealab stole from Spacelab.

star 7.81
64 votes
Butchslap

#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
Stimutacs

#23 - Stimutacs

Season 2 - Episode 2 - Aired Apr 28, 2002

In his quest to build the evilest of all empires, Sparks invents a miraculous new drug. Stimutacs are billed as an "herbal dietary supplement", but their side effects are truly amazing... and highly addictive! Can Dr. Quinn foil this nefarious plot?

star 7.79
264 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
7211

#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 7.76
208 votes