=== Major Planetary Zones | (Twin) Sections of the Habitual Belt | Regions | Wildlife ===

====== RATTLEBACK CRAWLER ======

{{ :rattleback_crawler_scenic_2d.png?200|}}

===== Overview =====

The Rattleback Crawler, called "Shon-Haka" by the [[the_orlanda|Orlanda Tribe]], is a soft-bodied arthropod native to the leaf-dense floor of the [[tropical_forest|Tropical Forest]] in the [[asari|Asari Region]] of the [[habitual_belt|Habitual Belt]] on [[the_planet_voi_700_d|VOI 700 D]]. Though small and slow-moving, it is instantly recognizable by the distinct vibrations it emits through the ground, warning larger animals and companions alike of its presence or potential danger.

Rattleback Crawlers are non-aggressive but have developed a rhythmic pulsing motion — part bluff, part balance mechanism — which mimics a rattling pattern when disturbed. This motion, combined with its earthy coloring, has made it a notable component of the local ecosystem and folklore, often seen as a sign that the forest is "watching."

===== Physique and Appearance =====

  * **Size:** 18–22 cm in length
  * **Weight:** 0.3–0.5 kg
  * **Body:** Segmented, soft exoskin covered in bristle-like hairs
  * **Coloration:** Dull brown with rust-red patches, mossy green striations along the back
  * **Speed:** 0.6 km/h (crawling), unable to swim

==== Special Features: ====

  * **Vibration Organs:** Specialized abdominal muscles generate low-frequency tremors
  * **Rhythmic Motion:** Capable of producing a rattling effect by swaying in a patterned rhythm
  * **Bristled Sensory Hairs:** Detect air pressure and ground vibrations from several meters away

===== Game Mechanics =====

  * **Armor Class (AC):** 10
  * **Hit Points (HP):** 5
  * **Speed:** 10 ft.

==== Attacks ====

  * None (Passive Creature)

==== Special Abilities ====

  * **Rattleback Defense:** When threatened, emits a ground tremor in a 10-ft. radius; creatures must succeed on a DC 11 Insight check to recognize it as harmless
  * **Early Warning System:** If within 30 ft. of allied creatures, grants +2 to initiative rolls when it detects incoming threats
  * **Natural Seismograph:** Detects movement of medium or larger creatures within 60 ft., even through foliage or brush

===== Behavior =====

  * **Diet:** Fungal spores, decaying plant matter, and small insects
  * **Social Structure:** Mostly solitary; loosely gregarious during the moist-season bloom
  * **Activity Pattern:** Diurnal, most active during periods of wind stillness or pre-storm humidity

==== Survival Strategies: ====

  * **False Threat Display:** Rhythmic body pulses simulate a larger or more dangerous creature
  * **Silent Retreat:** Slides under bark layers or into soft underbrush when disturbed
  * **Scent Cloak:** Emits a mild moss-like odor to blend with surrounding foliage

===== Reproduction and Lifecycle =====

  * **Breeding Trigger:** Initiated by sustained humidity and soil temperature rising above 28°C
  * **Egg Cluster Size:** 200–300 eggs
  * **Nesting Sites:** Moist detritus beds under layered bark
  * **Hatching Time:** 4–6 days
  * **Lifespan:** 3–5 years (Estimation)

===== Tactical Advice for Dungeon Masters =====

Rattleback Crawlers can subtly enrich the game environment or be used as natural alarm systems:

  * **Living Alarm:** Their vibration sense allows them to detect approaching enemies, giving perceptive players an edge
  * **Non-Combat Encounter:** Ideal for moments of tension or immersion in nature-focused missions
  * **Rare Harvest Material:** Vibration organs are sometimes used by Exohuman engineers to craft primitive seismic detectors or motion traps

===== Related Pages and Further Information =====

  * [[the_planet_voi_700_d|VOI 700 D]]
  * [[habitual_belt|Habitual Belt]]
  * [[asari|Asari Region]]
  * [[tropical_forest|Tropical Forest]]
  * [[wildlife_of_asari|Known Wildlife of Asari]]

**Known Predators:**

  * [[naka_tula|Naka Tula]]
  * [[shellmire_crab|Shellmire Crab]] (occasionally scavenges eggs)