Eat your Wheaties -- it's cartoon time!
From the video's info:
Sealab 2020 is an American animated television series produced by Hanna-Barbera. The series is about the crew of an underwater research base and has an environmental theme. The series premiered on the television network NBC on September 9, 1972. The show aired its 13th and final episode on December 2, 1972, leaving three episodes unaired.
The complete series has not yet been released on DVD, although the pilot episode "Deep Threat" is included in the Warner Bros. Saturday Morning Cartoons: 1970s Vol. 2 DVD set. The Milton Bradley Company made a board game based on the series. Scenes from Sealab 2020 were later re-edited and dubbed with new voices by 70/30 Productions to create the series Sealab 2021, which aired on the Adult Swim channel.