Fantastic Beasts and Where to Find Them is a 2001 book written by British author J. K. Rowling (under the pen name of the fictitious author Newt Scamander) about the magical creatures in the "Harry Potter" universe.
 The original version purports to be Harry Potter's copy of the textbook of the same name mentioned in "Harry Potter and the Philosopher's Stone" (or "Harry Potter and the Sorcerer's Stone" in the US), the first novel of the "Harry Potter" series.
 It includes several notes inside it supposedly handwritten by Harry, Ron Weasley, and Hermione Granger, detailing their own experiences with some of the beasts described, and including in-jokes relating to the original series.
The untitled "Fantastic Beasts" sequel is an upcoming fantasy drama film produced by Heyday Films and distributed by Warner Bros.
 Pictures.
 It is the sequel to the 2016 film "Fantastic Beasts and Where to Find Them", based on J. K. Rowling's book of the same name.
 It will serve as the second film instalment in the "Fantastic Beasts" series and the tenth overall in J. K. Rowling's Wizarding World, the franchise that began with the "Harry Potter" series.
 The film is directed by David Yates, with a script by Rowling, and features an ensemble cast that includes Eddie Redmayne, Katherine Waterston, Dan Fogler, Alison Sudol, Ezra Miller, Johnny Depp, Jude Law, Zoë Kravitz, and
J. K. Rowling's Wizarding World is a British-American media franchise and shared fictional universe centered on a series of fantasy films, distributed by Warner Bros.
 Pictures, based on the "Harry Potter" fantasy novels by British author J. K. Rowling and its fictional universe.
 The films have been in production since 2000, and Heyday Films has produced nine films since then, with four more in various stages of production.
 The series has collectively grossed over $8.5 billion at the global box office, making it the second highest-grossing film franchise of all-time.
Jaana Marjatta Kapari-Jatta (born 19 May 1955, in Turku) is a Finnish translator of fiction, best known for her Finnish-language renderings of the "Harry Potter" novels and supplementary books by J. K. Rowling, including "Harry Potter and the Cursed Child".
 In her translations of "Fantastic Beasts and Where to Find Them" and "Quidditch Through the Ages", she used the pseudonym “Kurvaa Aka (Whoss Gue)”.
Fantastic Beasts and Where to Find Them is a 2016 fantasy film directed by David Yates.
 It is a prequel to the "Harry Potter" film series, and it was produced and written by J. K. Rowling in her screenwriting debut, and inspired by her 2001 book of the same name.
 The film stars Eddie Redmayne as Newt Scamander, with Katherine Waterston, Dan Fogler, Alison Sudol, Ezra Miller, Samantha Morton, Jon Voight, Carmen Ejogo, Ron Perlman and Colin Farrell in supporting roles.
 It is the first installment in the "Fantastic Beasts" series, and the ninth overall in J. K. Rowling's Wizarding World, the franchise that began with the "Harry Potter" films.
The fictional universe of British author J. K. Rowling's "Harry Potter" series of fantasy novels comprises two distinct societies: the Wizarding World and the Muggle world.
 The Muggle world is the series' name for the world inhabited by the non-magical majority, with which the Wizarding World exists coextensively, albeit mostly remaining hidden from the non-magical humans.
 The plot of the series is set in 1990s Britain, but in a veiled and separate shadow society wherein magic is commonly used and practiced, and those who can use it live in self-enforced seclusion, hiding their abilities from the rest of the world.
 The term "Wizarding World" refers to the global wizard community that lives hidden in parallel with the Muggle world; the different terms refer to different communities within the same area rather than separate planets or worlds.
 Any new works taking place in this universe are released under the "J. K. Rowling's Wizarding World" brand.
Magical creatures are a colourful aspect of the fictional wizarding world contained in the "Harry Potter" series by J. K. Rowling.
 Throughout the seven books of the series, Harry and his friends come across many of these creatures on their adventures, as well as in the Care of Magical Creatures class at Hogwarts.
 Rowling has also written "Fantastic Beasts and Where to Find Them", a guide to the magical beasts found in the series.
 Many of these are derived from folklore, primarily Greek mythology, but also British and Scandinavian folklore.
 Many of the legends surrounding mythical creatures are also incorporated in the books.
 "Children ... know that I didn't invent unicorns, but I've had to explain frequently that I didn't actually invent hippogriffs," Rowling told Stephen Fry in an interview for BBC Radio 4.
 "When I do use a creature that I know is a mythological entity, I like to find out as much as I can about it.
 I might not use it, but to make it as consistent as I feel is good for my plot."
Pottermore is the digital publishing, e-commerce, entertainment and news company from J.K. Rowling and is a global digital publisher of Harry Potter and J. K. Rowling's Wizarding World.
 It offers news, features, and articles as well as new and previously unreleased writing by J.K. Rowling.
 The site features Rowling's thoughts, several pages of unpublished text, and a sales resource for e-book and audiobook versions of the seven "Harry Potter" novels.
The Darkness Series is a series of six fantasy novels by Harry Turtledove.
 Though a fantasy the general history, geography, and combatants are analogs of World War II, or the "Derlavai War" in this universe.
 Many of the characters are also the equivalents of historical people.
 Magic and other fantastic beasts, like dragons, are also stand-ins for World War II technology.
 Important battles in the series are also based on famous World War II battles, like the Battle of Sulingen which is an analog to the Battle of Stalingrad.
Harry Potter is a British-American film series based on the "Harry Potter" novels by author J. K. Rowling.
 The series is distributed by Warner Bros. and consists of eight fantasy films, beginning with "Harry Potter and the Philosopher's Stone" (2001) and culminating with "Harry Potter and the Deathly Hallows – Part 2" (2011).
 A spin-off prequel series will consist of five films, starting with "Fantastic Beasts and Where to Find Them" (2016).
 The "Fantastic Beasts" films mark the beginning of a shared media franchise known as J. K. Rowling's Wizarding World.

Question: "Fantastic Beasts" and J. K. Rowling's Wizarding World were both created based on what fantasy novels?
Answer: Harry Potter