=== Major Planetary Zones | Regions | Wildlife ===

====== TUBEWORM ======

{{ :tubeworm_gg_scenic_2d.png?200|}}
===== Overview =====

Tubeworm Colonies thrive in the sulfur-rich hydrothermal vent fields of [[ralar_bay|Ralar Bay]] in the [[dark_sea_region|Dark Sea Region]] and the [[ralar_region|Region Ralar]] on the [[dark_side|Dark Side]] of [[the_planet_voi_700_d|VOI 700 D]]. These colonies consist of thousands of sessile organisms anchored directly to geothermal fissures, where they absorb nutrients from the chemically rich water expelled by volcanic activity.

Though stationary, these creatures play a crucial role in the deep-sea ecosystem, converting toxic compounds into usable energy and forming a foundation for a complex biological web.

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

  * **Size:** Tubes range from 30 cm to 1.2 meters
  * **Weight:** 1-3 kg (per worm)
  * **Structure:** Hardened chitinous tube encasing a soft-bodied invertebrate
  * **Coloration:** Pale ivory tubes with vibrant red or purple feeding plumes

==== Special Features: ====

  * Lacks a digestive tract; relies on internal symbiotic bacteria for chemosynthesis
  * Can withstand extreme temperatures and high-pressure conditions
  * Tubes regenerate from minor damage over time

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

  * **Armor Class (AC):** 12 (tube armor)
  * **Hit Points (HP):** 8 per worm
  * **Speed:** 0 ft. (immobile)

==== Attacks ====

  * None — tubeworms are non-aggressive

==== Special Abilities ====

  * **Chemosynthetic Core:** Produces trace nutrients that may be harvested for rare compounds
  * **Heat Anchor:** Gains resistance to high temperatures and thrives near open vent mouths

===== Behavior =====

  * **Diet:** Absorbs hydrogen sulfide and methane; sustains itself through internal bacteria
  * **Social Structure:** Colonies of hundreds to thousands
  * **Activity Pattern:** Passive, constant nutrient absorption

==== Survival Strategies: ====

  * Anchors to hard rock surfaces for stability
  * Reproduces rapidly during thermal surges to outpace environmental destruction

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

==== Reproductive Traits: ====

  * **Spawning Triggers:** Linked to temperature spikes or chemical surges
  * **Reproduction Method:** Releases gametes into surrounding water for external fertilization

==== Lifespan and Growth: ====

  * **Total Lifespan:** 10-20 years (Estimation)
  * **Juvenile Phase:** Juveniles drift in currents until settling near active vents

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

Tubeworm Colonies offer environmental storytelling and resource potential for science-themed or survival missions.

  * **Rare Harvest Site:** Players may be tasked with collecting bacteria-rich samples for research or medicine
  * **Environmental Warning:** Presence of tubeworms may hint at an impending volcanic eruption or vent shift

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

  * [[the_planet_voi_700_d|VOI 700 D]]
  * [[dark_side|Dark Side]]
  * [[ralar_region|Ralar Region]]
  * [[ralar_bay|Ralar Bay]]
  * [[the_wildlife_of_the_dark_sea_from_a_to_z|Known Wildlife of the Dark Sea]]
  * [[the_wildlife_of_the_dark_side_from_a_to_z|Known Wildlife of the Ralar Region]]