CREATURE FROM THE HAUNTED SEA

During the Cuban Revolution, deported American gambler and racketeer Renzo Capetto devises a get-rich-quick scheme and uses his yacht to help a group of loyalists commanded by General Tostada to escape with part of Cuba's national treasury, which they plan to use to stage a counter-revolution.

American secret agent XK150, using the alias Sparks Moran, has infiltrated the gang. The gang consists of Capeto's brazenly felonious blonde girlfriend Mary-Belle Monahan; her deceptively clean-cut younger brother Happy Jack; and a gullible, good-natured, and homicidal oaf named Pete Peterson Jr., who does frequent animal impressions.

Unfortunately, despite his other role as the story's omniscient narrator, Sparks fails to realize what is happening because of his own incompetence and infatuation with the completely uninterested Mary-Belle, who regards his attempts to rescue her from a life of crime with amused contempt.

Capetto plans to steal the gold fortune and then to claim that the mythical "Creature from the Haunted Sea" rose and devoured the loyalists, but it is he and his crew who murder one of the Cuban soldiers with sharpened, claw-like gardening tools and leave behind fake "footprints" made with a toilet plunger and a mixture of olive oil and green ink. However, he does not know that there really is a shaggy, pop-eyed sea monster lurking in the very waters where he plans to do the deed.

When the monster's insatiable hunger interferes with his scheme, Capetto decides to sink his boat into 30 feet of water off the shore of a small island and then to retrieve the gold later. Complications ensue when two of the men of his gang get involved romantically with native women, with Pete developing a relationship with Porcina and Jack with her pretty daughter Mango, and local prostitute Carmelita becoming fond of Sparks.

Capetto and his gang go scuba diving to attempt to salvage the loot and kill some of the Cubans while doing so, but the creature kills everyone, including Mary-Belle, Porcina and Mango—except for Sparks and Carmelita. The movie ends with the creature sitting on the undersea treasure and picking its teeth. The creature burps and the bubbles roll up with the credits.

The creature kills all but Sparks and Carmelita, ultimately sitting atop the sunken treasure and contentedly picking its teeth as the credits roll.

The film’s ending delivers an absurd punchline: while human scheming leads to ruin, the supposedly mythical monster claims the prize, subverting both crime and horror conventions. The creature’s nonchalant ownership of the treasure underlines the film’s satirical tone, leaving the surviving characters—and the audience—bemused by the outcome.