Ice Worm

The Ice Worm is an aggressive leviathan class fauna species that tunnels beneath the surface of the ice. They are ambush predators, drawn towards the vibrations produced by movement and certain machinery on the ice's surface. Ice Worms are exclusively subterranean creatures and do not swim.
==Appearance==
The Ice Worm has a very long body, the top side of which is completely covered by a thick segmented exoskeleton. Beneath these plates are another set of triangular plates that stick out horizontally, each with a backwards facing spike. The underside of the creature is bare and unprotected, lacking any protective plating. The underside is grey in color and has two rows of parapodia used to grip the ice running parallel down the body.
The head is mainly comprised by a single huge plate which tapers into a long, thick horn sticking straight out from the head. This horn is super-heated and allows the Ice Worm to melt through ice in order to burrow.:File:Hothorn.PNG Below the horn, the creature's four mouth-parts can be seen. Each is long and curved with a solid black exterior and fleshy red interior. The inside of the upper and lower pair is lined with black spines. The tail ends with a pair of long and thin spines.
==Behavior==
The Ice Worm travels just below the surface of the ice, producing a distinct trail of pushed-up snow accompanied by a jet of steam. It is attracted to noise and vibration, and will surface to attack their source. 
The Thumper appears to produce a sound frequency that deters Ice Worms, and can be used to safely traverse Ice Worm territory for as long as its battery lasts.
Once above ground, Ice Worms will roar loudly before attacking. If the player or Thumper is a reasonable distance from the Ice Worm, the Ice Worm will lunge at the target. After it has lunged at the player, it will either emerge back out of the ground to do another attack or it will poke at the player from underground with its horn. If it is closer to the target it will do one of many close-range attacks. 
While tunnelling, it can dash at the player, and if it catches them, will spear and fling them into the air, before swallowing them whole. 
When an Ice Worm enters hunt mode, they begin to rapidly attack the player, using dive attacks, pokes, spear attacks, and whip attacks.
If the player is currently riding a Snowfox, the player takes no damage and is removed from their vehicle.
If there is a Snow Stalker within their vicinity, an Ice Worm will eat it suggesting it as their primary known source of nutrition and sustenance.
It is impossible to kill an Ice Worm, as it does not have a hitbox. It is also impossible to scan a living Ice Worm, and as such, scanning the Ice Worm carcass in the Arctic Spires is the only way to obtain its databank entry.
==Databank Entry==
<tabber> 
Ice Worm=
|-|
Ice Worm Bones=
</tabber>
==Design==
The Ice Worm's design draws heavily on the real-life bobbit worm. Though far greater in size, the Ice Worm shares the hard parapodia running down the body and an ambush-reliant lifestyle. 
The tail spines of the Ice Worm are similar to the distinctive cerci seen on the rears of earwigs.
Inspiration also may have been taken from the larvae of Platerodrilus species, otherwise known as trilobite beetles. The dorsal side of the Ice Worm's body shares many similarities in shape and color with the larva of these beetles. 
The Ice Worm's head bears a striking resemblance to this image of a deep-sea tubeworm and was likely based on it.
The concept of a worm- or centipede-like arctic monster with red-hot spines may be taken from the Remorhaz of Dungeons & Dragons.
The concept of the Ice Worm's behavior as well as the primary means of circumventing said behavior (i.e., a Thumper) are heavily based upon that of the Sandworms and the titular Thumpers from the Dune novels.
==Sounds==
==Gallery==
<tabber>
In-Game=
Iceworm2 (BZ).jpg|An Ice Worm above ground
Iceworm7.jpg|Roaring
Iceworm4 (BZ).jpg|Attacking a thumper
Iceworm5.jpg|Digging back into the ground
Iceworm6.jpg|Tail straight in the air
Iceworm3 (BZ).jpg|Retreating into the ground
Iceworm8.jpg|Side sweep attack
20190201110152 1.jpg|Jumping
SubnauticaZero 2019-02-03 15-43-05.jpg|Ice Worm lunging
IcewormSizeref.jpg|Size comparison with the player
Icewormmouth.jpg|Close up on Ice Worms mouth with the player inside
2020-07-08 00004.jpg|Ice Worm Scanning
DC39A861-DEBE-4376-B363-778A87249A3A.jpeg|An Ice Worm in the Arctic Spires
Icewormboneyard.png|A dead Ice Worm
|-|
Concept Art=
Ice Worm 1.jpg|Ice Worm final design head-shot - by Alex Ries
E1c9osLUcAAiAmm.jpg|Ice Worm final design - by Alex Ries
E5BDywMVoAYvDrj.jpg|Ice Worm final jaw variants - by Alex Ries
Ice Worm 2.png|Ice Worm final head variants - by Alex Ries
Ice Worm 3.png|Earlier design - by Alex Ries
Ice Worm 4.png|Earlier still - by Alex Ries
Alex iceworm.jpg|Early Ice Worm -by Alex Ries
Wormcolors.jpg|Ice Worm color variant concept art
|-|
Models=
IceWormModel.jpg|Model from Sketchfab
|-|
Other=
BrokenSillyArmednylonshrimp-max-1mb.gif|Ice Worm in the cinematic trailer
Fulll.jpg|The Ice Worm in Below Zero's promotional image, chasing after Robin
</tabber>
==Notes ==
== Trivia== 
*The Ice Worm is the only known non-extinct land-based leviathan on Planet 4546B.
*The Ice Worm shares its name with a real animal that lives in glacial ice.
*The Ice Worm is closely related to the Shadow Leviathan.
*The Ice Worm is one of the few Leviathans to be terrestrial in nature.
*Using the debug id icewormspawner spawns in an older version of the Ice Worm, with different behaviors. E.g. The Thumper will instead attract the Ice Worm, which is the opposite of the intended effect.
*The creature's existence and behaviour - namely hunting sources of vibration from Thumpers and other machinery - is a clear homage to the Sandworms of Arrakis from Frank Herbert's 1965 novel Dune. Also like its literary counterpart, the Ice Worm is nigh invulnerable to most weapons and forms of attack, and is the apex predator of its environment.
*The Ice Worm possibly takes inspiration from the Hotheaded Naked Ice Borer, a fictional animal invented by Discover magazine as an April Fool's Day joke. Both the Ice Borer and the Ice Worm possess a heated part of their bodies that they use to melt through ice to hunt for prey.
==References==
Category:Fauna
Category:Aggressive
Category:Leviathan Class
Category:Bioluminescent
Category:Arctic Spires
Category:Carnivores
fr:Ver des glaces
Category:Terrestrial
Category:Story
Category:Subnautica: Below Zero