Overview
The Deep is a 1977 adventure film based on Peter Benchley's 1976 novel of the same name. It was directed by Peter Yates, and stars Robert Shaw, Jacqueline Bisset and Nick Nolte.
Plot
While scuba-diving near shipwrecks off Bermuda, vacationing couple David Sanders and Gail Berke recover small artifacts, including a glass ampoule with amber-coloured liquid and also a gold medallion bearing a woman's image and the letters "S.C.O.P.N." (meaning "Santa Clara, ora pro nobis", for "Saint Clara, pray for us") and a date, 1714. An unknown sea creature suddenly grabs Gail's wood baton as she probes the wreck's crevices. Panicked, she gets loose from the strap while the baton's end is left shredded. Sanders and Berke seek advice from historian and treasure-hunter Romer Treece on the medallion's origin. He identifies the item as Spanish and takes an interest in the couple.
The dive shop clerk notices the ampoule, which in turn attracts the attention of Henri "Cloche" Bondurant, a local drug kingpin the clerk works for. When Clouche unsuccessfully tries to buy the ampoule, he begins terrorizing the couple. The ampoule contains medicinal morphine from the Goliath, a ship that sank during World War II with a cargo of munitions and medical supplies. The Goliath is off-limits to divers due to the still-live explosives. Treece concludes that a recent storm has exposed the morphine and unearthed a much older wreck containing Spanish treasure that is beneath Goliath.
Treece makes a deal with Cloche to retrieve the ampoules for a million dollars, which Cloche can illegally resell for over three million, while Treece secretly searches for the treasure. Cloche gives him three days to recover the morphine. Sanders, Berke and Treece make several dives to the wrecks, recovering thousands of ampoules from Goliath and several additional artifacts from the Spanish wreck. They also encounter a huge moray eel, which lurks inside the vessel, and was what previously attacked Berke. Adam Coffin, the only survivor from Goliath, joins the venture, but his loyalty shifts when he feels slighted by Treece. When Cloche's men arrive and dump bait into the water to attract sharks, Coffin tells Treece he probably fell asleep without noticing they were in trouble.
From Wikipedia (CC BY-SA 4.0).