Tintorera is a 1977 Mexican-British horror film directed by René Cardona Jr. and starring Susan George, Hugo Stiglitz, Fiona Lewis and Andrés García. It is based on the novel of the same name by oceanographer Ramón Bravo, who studied the species of shark known as 'tintorera' (a shark) and discovered the sleeping sharks of Isla Mujeres. The film, along with many monster movies of the 1970s and 1980s, is very similar to Jaws. It is also known by the alternative title Tintorera: Killer Shark. Quentin Tarantino paid tribute to this movie at the eighth Morelia International Film Festival, showing a copy from his private collection. Plot Steven a U.S.-born Mexican businessman, arrives in a Mexican resort village on a yacht anchored offshore. One of the local fishermen and the caretaker of the yacht, Colorado, takes Steven with him when he goes to haul in the sharks he has caught, but is annoyed to find that another shark has taken a huge bite out of one of them. Steven then sets his sights on Patricia, an Englishwoman on vacation. They have a whirlwind romance but break up when Steven can't decide if he's in love with her. Steven is extremely jealous, however, when she begins a relationship with Miguel, a womanizing swimming instructor at the nearby resort hotel. While Steven stews on the yacht, Patricia and Miguel have sex. Then she goes skinny-dipping in the ocean and is eaten by a large tiger shark. The next day, Steven confronts Miguel in the hotel bar. Miguel tells Steven that Patricia was in love with Steven, but she must have returned to England. Neither man ever learns of her true fate. Miguel introduces Steven to two sisters, American college students Kelly and Cynthia Madison. They go on a double date and swim to the yacht for some skinny-dipping at the sisters' suggestion. The shark is in the water nearby, but they safely make it to the boat. Kelly and Cynthia then hop back and forth between Miguel's and Steven's beds. They all swim back to shore the next morning, and the submerged tiger shark again chooses not to bother them. When Miguel and Steven start a shark hunting business, Miguel tells Steven that they must immediately get out of the water if a tiger shark ever appears. One night, Miguel and Steven meet Gabriella a young English tourist. Miguel and Steven take Gabriella