Sealab 2020 is a 30-minute Saturday morning animated series produced by Hanna-Barbera Productions and broadcast on NBC from September 9, 1972 to December 2, 1972. A total of 13 episodes were aired, with three episodes remaining unaired. As with most Hanna-Barbera series, the show was in occasional rotation on Boomerang, the TV channel that owns the Hanna-Barbera archives. From 2001 to 2005, the series had a second life when it was parodied as Sealab 2021 on Cartoon Network.
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