TV series
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, 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.
Streaming, rental and purchase options
Checked Jul 22, 2026
Sealab 2021 is available to stream on DirecTV On Demand, YouTube TV, and Spectrum On Demand in United States. You can also buy it from Amazon and Apple TV. Use the direct links below to open the provider.
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, 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.
Choose an episode, then use the watch options above for the show.
Episode 1
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).
Guest stars Matt Thompson
Episode 2
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.
Where to watch Sealab 2021
Episode 3
Extreme rebel trillionaire, Max Stone, buys Sealab and ends up running it better than before.
Where to watch Sealab 2021
Episode 4
The police want Shanks... Why? The story is revealed in reverse. But it involves a monster, a plan to improve the world, and Grizzlebee's.
Guest stars Lina Michaelis
Episode 5
Quinn and Stormy are stuck in a cave with only 10 minutes of oxygen while sealab burns.
Where to watch Sealab 2021
Episode 6
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!
Guest stars Chuck D
Episode 7
All the water around Sealab has disappeared, and left Sealab high and dry. Where has it all gone?
Where to watch Sealab 2021
Episode 8
The cast looks back over five years of "A Legacy of Laughter" in the style of one of those tacky TV reunion specials but of course since this IS Sealab, not all goes well.
Guest stars Angela Elayne Gibbs, Lina Michaelis
Episode information updated Jul 23, 2026
Erik EstradaMarco (voice)
Kate MillerDebbie (voice)
Bill LobleySparks (voice)
Cartoon NetworkUnited States
Adult SwimUnited States
Williams StreetUnited States
Seventy-Thirty ProductionsUnited StatesMore shows like Sealab 2021.
Available nowSimilar story and audience
Available nowSimilar story and audience
Available nowSimilar story and audience
Available nowSimilar story and audience
Similar story and audience
Similar story and audience