@gustavratzenhofer,
* The Lambton Worm, of 15th-century English legend, also made into an opera by Robert Sherlaw Johnson
* The Worm of Sockburn, of 14th-century English legend
* The Worm of Linton, of 12th-century Scottish legend
* The Laidley Worm of Bamburgh
* Great Orms of fresh and salt water in early Gaelic and Brythonic legends
* The Jörmungandr or Midgard Serpent of Norse Mythology
* The Mongolian Death Worm, a cryptozoological creature reported to exist in the Gobi Desert.
list noted!