The first depiction of a sandworm with 3 radially-symmetrical mouth flaps I can find is an illustration by John Schoenherr for the first part of the serialized "The Prophet of Dune" in Analog, January 1965.

The same idea was used as the cover art for the third part in March of the same year:

Schoenherr refined this concept and the version of a sandworm shown on the 1978 Dune calendar was very similar to later depictions, including a ring of many inward-pointing teeth:

Answer from DavidW on Stack Exchange
🌐
Fandom
dune.fandom.com › wiki › Sandworm
Sandworm | Dune Wiki | Fandom
3 days ago - Hence, the Sandworms are referred to as "the dragons on the floor of the desert" in Children of Dune. Sandworms resemble mythical olgoi-khorkhoi from the Gobi Desert, but Frank Herbert never mentioned it as an inspiration.
Discussions

The worm's behavior toward Paul
As others have said, off-screen thumper, 30 second delay where we hear nothing but see the worm staring them down. I think we need to remember the worms feel vibrations in the sand well before any human would perceive the thumpers acting. If the worm was chasing a sound, Paul and Jessica, then suddenly lost the same vibrations as they stepped up on the rocks and found it again a bit off in the sand (the thumper) then it might take a second to calibrate and go. More on reddit.com
🌐 r/dune
168
145
June 21, 2022
What is that _thing_ in the beginning of Dune(1984)?
It's a Guild Navigator, which has injested so much spice that it has turned into that. I dont believe the navigators were described in the first book, but you meet one early on in the second. More on reddit.com
🌐 r/dune
24
27
November 21, 2022
I’m sure this question has been asked many times before but: which sand worm do you guys like more?
The sandworm design has the same issue as depictions of the God Emperor - you get to pick between accuracy and looking good. The new sandworms seem more accurate with no beaks and the baleen-looking teeth. But they don’t look as cool as the Schoenherr depictions (which is ironic because Frank was 100% on board with Schoenherr’s version). More on reddit.com
🌐 r/dune
27
36
September 30, 2021
Dune (1984) vs Dune (2021) Spice Harvester scene
Special effects have come a long way More on reddit.com
🌐 r/dune
318
5053
January 10, 2022
🌐
Monster Legacy
monsterlegacy.net › 2014 › 04 › 28 › dune-sandworms-arrakis
Sandworms of Arrakis – Monster Legacy
April 28, 2014 - In the universe of Frank Herbert’s eponymous novel series, the Sandworms are the titanic inhabitants of the desert planet Arrakis. Their name among the Fremen is Shai-Hulud — a term derived from Arabic, meaning ‘eternal thing’. In the ...
🌐
IMDb
imdb.com › title › tt0087182
Dune (1984) ⭐ 6.2 | Action, Adventure, Sci-Fi
December 14, 1984 - The movie shines where it 's most important namely the sand worms which look fairly convincing. Personally I prefer (well done) miniature shots over those Episode 1/2 CGI effects which make especially environments look like plastic.
Release date   Dec 14, 1984
Duration   02:17:00
Director   David Lynch
Rating: 6.2/10 ​ - ​ 191K votes

The first depiction of a sandworm with 3 radially-symmetrical mouth flaps I can find is an illustration by John Schoenherr for the first part of the serialized "The Prophet of Dune" in Analog, January 1965.

The same idea was used as the cover art for the third part in March of the same year:

Schoenherr refined this concept and the version of a sandworm shown on the 1978 Dune calendar was very similar to later depictions, including a ring of many inward-pointing teeth:

Answer from DavidW on Stack Exchange
🌐
ScreenRant
screenrant.com › home › movies › movie news › how dune 1984 did unbelievable sandworm vfx
How Dune 1984 Movie Did Unbelievable Sandworm VFX
November 16, 2021 - In their latest video, three VFX artists from the popular YouTube channel Corridor Crew explain the visual effects behind the introductory sandworm scene in the 1984 version of Dune. The scene features the first appearance of a sandworm in the ...
Find elsewhere
🌐
Wikipedia
en.wikipedia.org › wiki › Sandworm_(Dune)
Sandworm (Dune) - Wikipedia
November 26, 2025 - Meanwhile, sandworms are revealed ... In the 1984 David Lynch film Dune, the sandworms were designed by special effects modeler Carlo Rambaldi for a budgeted $2 million....
🌐
eBay
ebay.com › toys & hobbies › action figures & accessories › action figures
Rare 1984 Vintage LJN Toys Dune Sandworm Boxed Complete New Movie FREESHIP | eBay
Rare 1984 Vintage LJN Toys Dune Sandworm Boxed Complete New Movie FREESHIP
1984 LJN Toys. This was made in 1984 by LJN Toys for the. Dune Movie. cult classic movie Dune. The rubber worm. is a RARE piece to find in the box. Its factory attached and is all NEW. The pictures show all sides and.
Price   $419.84
🌐
2 Warps to Neptune
2warpstoneptune.com › 2014 › 08 › 28 › ljns-dune-toys-sandworm-1984
LJN’s Dune Toys: Sandworm (1984) | 2 Warps to Neptune
October 29, 2014 - Have you no shame, LJN? If only it vibrated… This one’s for you, Don. UPDATE (10/29/14): Found one with original and markdown price tags.
🌐
Tenor
tenor.com › view › dune-1984-david-lynch-worm-sandworm-gif-24223724
Dune 1984 GIF - Dune 1984 David Lynch - Discover & Share GIFs
December 22, 2021 - dune · 1984 · David Lynch · worm · sandworm · Content Description: a person is floating in the water with a blanket on their head . File Size: 2088KB · Duration: 2.900 sec · Dimensions: 498x205 · Created: 12/22/2021, 4:10:54 PM · ...
🌐
DuneInfo
duneinfo.com › arrakis › sandworms
Sandworms - Dune - Behind The Scenes
Worm handlers position model worms on the all-too-warm miniature desert set. On the Churubusco backlot, Kyle MacLachlan chases after a section of sandworm that is mounted on a track and pulled by a track off picture. A camera, mounted on parallel track, records his moves. First Children of Dune teaser trailer online.
🌐
@theU
attheu.utah.edu › facultystaff › dunes-sandworms-fact-vs-fiction-with-a-u-worm-wrangler
‘Dune’ sandworms: Fact vs fiction with a U worm wrangler - @theU
For Michael Werner, a science fiction fan and biologist whose research focuses on a roundworm called a nematode, “Dune” is peak entertainment. Since Frank Herbert published the first “Dune” novel in 1965, the epic story has inspired ...
🌐
YouTube
youtube.com › watch
Dune (8/9) Movie CLIP - Riding the Sandworm (1984) HD - YouTube
Dune movie clips: http://j.mp/15vL0kZBUY THE MOVIE: http://amzn.to/snrk0WDon't miss the HOTTEST NEW TRAILERS: http://bit.ly/1u2y6prCLIP DESCRIPTION:Paul (Kyl...
Published   June 16, 2011
🌐
YouTube
youtube.com › screen themes
Dune (1984) - Paul Rides the Worm scene [1080p] - YouTube
This main theme made a justified appearance in this key scene, although it was unfortunately embellished with a cheesy and dated guitar riff. Still, the visu...
Published   October 18, 2020
Views   246K
🌐
YouTube
youtube.com › watch
Riding A Giant Sandworm | Dune (1984) | Screen Bites - YouTube
Paul Atreides (Kyle MacLachlan) daring ride atop the giant sandworm is an iconic moment of bravery and adventure. Join him as he tames the colossal creature ...
Published   March 18, 2024
🌐
YouTube
youtube.com › science fiction station
The Spice Station is Attacked by Sandworms | Dune (1984) | Science Fiction Station - YouTube
Duke Leto Atreides (Jürgen Prochnow), his son Paul (Kyle MacLachlan) & Gurney Halleck (Patrick Stewart) are given a tour of Arrakis & the spice production by...
Published   March 5, 2024
Views   2K
🌐
YouTube
youtube.com › watch
Paul Atreides rides the giant worm | Dune | CLIP - YouTube
Paul Atreides rides the giant worm✔️ Follow us on Facebook ➤ https://www.facebook.com/204568612956950📢 New Movies 2023 ➤ https://www.youtube.com/playlist?...
Published   February 14, 2024