Creature From The Haunted Sea 1961

Creature from the Haunted Sea is a 1961 horror comedy movie directed by Roger Corman. Written by Charles B. Griffith, the movie is a parody of spy, gangster, and monster movies (mostly Creature from the Black Lagoon), concerning a secret agent, XK150 (played by Robert Towne credited as Edward Wain), who uses the name "Sparks Moran" in order to infiltrate a criminal gang commanded by Renzo Capetto (Antony Carbone), who is trying to transport an exiled Cuban general with an entourage and a large portion of the Cuban treasury out of Cuba. Filmgroup released the movie as a double feature with Devil's Partner.
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 debeloping 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.