Question: which horror film was based on a creature sighted around mid 1976 in Cornwall, England?

Context articles: Galloway European
Bob Wilkins
The Curse of Frankenstein
They're Alive!
Lord of Tears
The Creature Walks Among Us
It Waits
Owlman
Many-finned sea serpent
Gravity Interactive

Galloway European or Galloway Travel Group is a bus and coach operator based in Mendlesham, Suffolk operating extended tours, day excursions, public bus and school services around Mid Suffolk under contract to Suffolk County Council.
 and two coach services under contract to National Express, from Ipswich and Felixstowe to London Victoria Coach Station and Stansted Airport.
Bob Wilkins (April 11, 1932 – January 7, 2009) was a television personality born as Robert Gene Wilkins in the town of Hammond, Indiana.
 Wilkins was best known as the creator and host of a popular television show named "Creature Features" that ran on KTVU in the San Francisco Bay Area from 1971 to 1984, and which premiered with Del Tenney's infamous "The Horror of Party Beach".
 The programming on "Creature Features" featured science fiction and horror film; everything from the classics, such as "Bride of Frankenstein" to turgid turkeys like "The Vulture".
 More often than not, the films were good, and sometimes the show hit benchmarks: George A. Romero's "Night of the Living Dead" had its world television premiere on the show, just a couple of years after its original theatrical release.
 Wilkins' style of wit was very dry, and fit very well with some of the "schlockers" he was forced to air, which was a big part of his appeal to his fans (somewhat in the style of "Mystery Science Theatre 3000").
 As host of the show, his droll humor and onmnipresent cigar became his trademarks.
The Curse of Frankenstein is a 1957 British horror film by Hammer Film Productions, loosely based on the novel "Frankenstein" (1818) by Mary Shelley.
 It was Hammer's first colour horror film, and the first of their Frankenstein series.
 Its worldwide success led to several sequels, and the studio's new versions of "Dracula" (1958) and "The Mummy" (1959) and established "Hammer Horror" as a distinctive brand of Gothic cinema.
 The film was directed by Terence Fisher and stars Peter Cushing as Victor Frankenstein, Hazel Court as Elizabeth, and Christopher Lee as the creature.
They're Alive is the debut album of German horror punk band The Other, released in 2004.
 The cover art is inspired by classic horror film posters.
 At the bottom, it has an actor "starring" section for the band members: "STARRING: Andy Only, Dr Caligari, Rod Usher, Sarge von Rock and... The Creature" (in classic horror films, the Gill-man is commonly referred to as the "The Creature")
Lord of Tears, also known as The Owlman, is a 2013 Scottish low-budget horror film directed by Lawrie Brewster and was his horror film directorial debut.
 The film first released on 25 October 2013 in Whitby at the Bram Stoker International Film Festival, where it won two awards.
 The film follows a Scottish schoolteacher that begins to see visions of the Owl Man, a strange figure that he was obsessed with as a child.
 The film was followed by "The Black Gloves", again directed by Lawrie Brewster.
The Creature Walks Among Us, released in 1956, is the third and final installment of the "Creature from the Black Lagoon" horror film series from Universal Pictures, following 1955's "Revenge of the Creature".
 The film was directed by John Sherwood, the long-time Universal-International assistant director, in his directorial debut.
 Jack Arnold, who had directed the first two films in the series, had moved on to "A-list" films, and felt he had no more to contribute to the horror genre.
 He suggested that his assistant director, Sherwood, could move up to full director, which partly affected Universal's decision to allow him to direct the film.
 "The Creature Walks Among Us" starred Jeff Morrow, Rex Reason, and Leigh Snowden, and, like the original "Creature from the Black Lagoon", had music composed by Henry Mancini, who at the time was under contract with Universal.
It Waits is a 2005 American horror film directed by Steven R. Monroe and starring Cerina Vincent, Dominic Zamprogna, and Greg Kean.
 Written by Richard Christian Matheson, Thomas E. Szollosi, and Stephen J. Cannell, the film is about a female forest ranger who encounters a terrible creature who has been killing people in the remote national forest where she works.
 When the creature attacks her isolated ranger station and kills her forest ranger boyfriend, she goes after the creature.
 Filmed on location in British Columbia, Canada, "It Waits" was a direct-to-DVD release in the United States and worldwide.
The Owlman, sometimes referred to as the Cornish Owlman, or the Owlman of Mawnan, is a purportedly mysterious owl-like creature that, according to local folklore, was sighted around mid-1976 in the village of Mawnan, Cornwall, England.
 The Owlman is sometimes compared to America's Mothman; however, a giant eagle owl is likely the source of the legend.
The many-finned sea serpent is an unverified species or group of species of marine animals which seem to possess numerous fins along their sides or backs.
 The creatures are supposedly capable of growing to enormous lengths; around 45 m for one such creature sighted near Algeria.
 In his book, "On the Nature of Animals" (second century CE), Greek military writer Aelian reported that these sea serpents were known to beach themselves.
 He also reported that witnesses had described such creatures as having lobster-like tails and large nostrils with hair.
Founded in March 2003, Gravity Interactive LLC was created to host games for North America developed by GRAVITY Co., Ltd..
 It is based in Buena Park near Orange County, California.
 Gravity was initially provided with several servers from Gravity Co., and began beta testing of the International Ragnarok Online (iRO) service in 2003.
 Commercial service subsequently began on June 1, 2003.
 In 2005, Gravity also began hosting the North American version of ROSE Online (naROSE).
 On January 1, 2006, Gravity Interactive LLC became Gravity Interactive, Inc.
 In February 2008, Gravity began beta testing its third MMORPG, .
 Around mid to late 2012 Gravity began beta testing its fourth MMORPG, Maestia: Rise Of Keledus.
 In April 2013, Gravity began beta testing the second title in the Ragnarok Online series.
 was launched in May 2013 and also available on Steam.