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The Scarred Expanse

A world orbiting a stable K-type star, Scarred Expanse is a terrestrial planet with slightly higher gravity than Earth. Its atmosphere is thin, rich in nitrogen and argon, with only trace amounts of oxygen. Vast, arid continents dominate, punctuated by extensive mountain ranges and volcanic plains. Life primarily exists in the planet's few, shallow, hypersaline seas and in geothermally heated underground aquifers.

Vent Bloomworm

Evo 2WormEats anythingUnderground

Shaped by 🌾 abundance

A larger, more robust version of its ancestor, the Vent Bloomworm thrives in the abundant geothermal energy, dedicating more resources to chemosynthesis and reproduction.

Enlarged chemosynthetic organsIncreased reproductive rateThicker cuticleReduced detritus consumption
Size
35 cm
Diet
Chemosynthesis and detritus
Habitat
Geothermal vents and hypersaline shallows
Moves by
Peristalsis

Why it evolved

With food resources becoming unusually plentiful near the geothermal vents, selection favours individuals that can most efficiently exploit this surplus. The Vent Bloomworm has enlarged its chemosynthetic organs to process more sulfur compounds, leading to increased size and reproductive rates. This specialization comes at the cost of increased dependence on the consistent output of the geothermal vents, making it vulnerable should these sources fluctuate, a risk heightened by the planet's volcanically active nature.

What changed from Geothermic Siltworm

Gained:+ Enlarged chemosynthetic organs+ Increased reproductive rate+ Thicker cuticle+ Reduced detritus consumption
Lost:ChemosyntheticHeat-tolerantBurrowingTolerant of high salinityNitrogen-fixing
  • Size: 20 cm 35 cm
🪱Geothermic …Evo 1🪱Vent Bloomw…Evo 2🪱Drought-Tol…Evo 2🪱Armored Sil…Evo 3🪱Resilient S…Evo 3🪱Spiked Silt…Evo 4🪱Deep Silt E…Evo 4🪱Grinding Si…Evo 5🧬
  • resilient
  • strained
  • fragile
  • ★ canon
  • 🧬 hybrid
  • 💀 extinct
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