Description:  Sealab 2020 is a Hanna-Barbera animated series from 1972 about a scientific research base in the year 2020, dedicated to exploring the ocean and protecting marine life. The show followed the crew, led by Captain Murphy and Dr. Williams, as they encountered challenges like giant squids, environmental disasters, and shark attacks. The original series was family-friendly and educational, with a focus on environmental themes, and later served as the basis for the more adult-oriented parody Sealab 2021.

Setting and premise: The show was set in the future year of 2020 at an underwater research base called Sealab, located on the Challenger seamount.

Crew: The base was home to a large crew, including Captain Michael Murphy and Dr. Paul Williams, a leading oceanographer who headed the scientific team.

Plot: Episodes often revolved around the crew's efforts to protect the marine environment and themselves from threats like pollution, giant sea creatures, and equipment malfunctions, such as a malfunctioning cargo submarine crashing into the base.

Themes: The series was educational and had an environmental focus, though it was noted for not being heavy-handed with its messages, unlike later shows.

Legacy: The original series was not a massive success, but its concept was later reused by Cartoon Network for the adult comedy series Sealab 2021, which used a lot of the original's animation but featured a completely different, more absurd plot.