Old adventure movie characters go under the sea from an old house

Three deep sea divers get involved in murder while searching for a lost treasure.

A ship disappears without trace. What happened to the crew? Years later there's news of possible survivors and soon a rescue team is setting sail. Eventually they discover a young man living on a remote island and they ask him to leave with them. He refuses, so they abduct him. But he gets his revenge and guides them into the lair of the devil of the deep. Alternate language version of THE SEA FIEND (1935)

Aquatic adventurers meet some sea creatures.

After hearing a tale of a mysterious lost treasure, an old man’s family heads off on a perilous journey only to suffer the same fate as the shipwrecked survivors from sixty years ago.

A newly re-discovered classic, The Underseas Explorers is an animated educational cartoon that was first shown in 1961. A true collectors item, it has been proclaimed to be "ahead of its time." Owing to its inclusion of an "island boy" character similar to "Hadji," it has sometimes been referred to as an underwater version of "Johnny Quest." Onboard the tiny atomic submarine "Hydronaut," a small group of underwater adventurers set out to explore the oceans and circumnavigate the globe under the North Pole (the Arctic Cap). During their televised journey, they discover the original landing site of old pirates. Professor Scott meets undersea creatures including an unexpected underwater duel with an eight-legged octopus. The title has often been incorrectly referred to as: The Undersea Explorers, The Underwater Explorers, The Underwater Adventurers, Journey to the Bottom of the Sea and many others.

Two adventures dive for treasure off the coast of Jamaica.

The beginning of the film deals with the love romance of a deep-sea diver and the daughter of an old curio collector, whose past life takes up a good part of the film and reveals to the spectator his younger days as he tells them the story of his romance and marriage.

A chance discovery leads American mining engineer Ben Harris and acquaintance Harold to discover a lost city under the sea while searching for their kidnapped friend Jill. Held captive in the underwater city by the tyrannical Captain (Vincent Price), and his crew of former smugglers, the three plot to escape...

A skimpy plot---hunting for sunken treasure in the waters of Florida and Haiti--- tied mostly to some underwater scenes shot in the safety of Cypress Gardens, and sold by Warners on a campaign built (no pun intended) on the measurements---42-22-39---of photographer's model Dottie Lee Phillips, who poses under palm trees while Ross Allen and William Fuller are underwater...and on land.