Sealab 2021 (2000 – 2005) full episodes watch cartoons online.
Synopsis: Using old animation and the same characters from Hanna Barbera's “Sealab 2020,” all of the crew members aboard Sealab's submarine have gone insane. Their mental shortcomings make it difficult and inconceivable to properly run a trillion-dollar underwater research station, but their incoherent decision-making and farcical interactions with one another make for a hilarious remake of an oldie but goodie.
Creators: Adam Reed, Matt Thompson
Stars: Harry Goz, Erik Estrada, Ellis Henican
More information: IMDB, Wikipedia
P/s: All the episodes of season 5 are included in season 1, 2, 3, 4.