Return to the Sea is an American science documentary television series that aired on PBS from 1991 to 1992, with an additional special that was broadcast in 1995.

The series focuses on topics of interest in recreational diving and the conservation of oceanic and coastal environments.

Underwater cinematographer Bill Lovin[1] presents the series, in which viewers "return to the sea" in each episode.

Recurring themes in the series are how improvements in diving equipment have made recreational diving safe and accessible for everyone rather than only for scientists, explorers, and adventurers; how human carelessness and thoughtlessness can damage environments and endanger wildlife; and how everyday people can contribute to understanding and conserving marine and coastal environments.

In 2020, Bill Lovin created the Web site OceanArchives and uploaded to it all 14 complete episodes of Return to the Sea – as well as separate video files of some of the individual segments of multi-segment episodes – so they can be viewed, downloaded, and used for free for non-commercial purposes under a fair use policy, with a goal of assisting educators and students.