Beneath the 12-Mile Reef
Mike and Tony Petrakis are a Greek father and son team who dive for sponges off the coast of Florida. After they are robbed by crooks, Arnold and the Rhys brothers, Mike decides to take his men to the dangerous 12-mile reef to dive for more sponges. Mike suffers a fatal accident when he falls from the reef leaving Tony to carry on the business. But now he has a companion, Gwyneth Rhys.
Top cast
Robert WagnerTony Petrakis
Terry MooreGwyneth Rhys
Gilbert RolandMike Petrakis
J. Carrol NaishSocrates Houlis
Richard BooneThomas Rhys
Angela ClarkeMama Petrakis
Peter GravesArnold Dix
Jay NovelloSinan
Jacques AubuchonDemetrios Sofotes
Gloria GordonPenny Petrakis
Harry Carey Jr.Griff Rhys
Rock HudsonNarrator (uncredited)
Below are the streaming services currently carrying the movie “Beneath the 12-Mile Reef” in Canada, along with how each offers it (subscription, buy, or rent) and a direct link. Licensing differs by market, so availability in Canada can differ from other countries.
Where to watch Beneath the 12-Mile Reef in Canada
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Not currently available on the supported providers in Canada.
Availability can change as licenses rotate — confirm on the provider’s page before subscribing. Last checked: 14 Sept 2026.