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The Necrolei (Anthobrachia necrolei, "flower-armed death-leech") is a clonal stalk-jelly that remains permanently moored to the seafloor — similar to a stauromedusa in structure. Each stalk is a clonal individual in a larger colony. Found in the Anemone Hills biome, the Necrolei is passive and non-threatening, but its colony structures drop Necrolei Cysts — the renewable ingredient for Strong Acid (2 Cysts → 1 Strong Acid in the Processor), making the Anemone Hills a key resource biome.

Where to Find

Anemone Hills

Stats

Scientific Name Anthobrachia necrolei

Notes

Drop: Necrolei Cyst (used in Strong Acid: 2 Cysts → 1 Acid at Processor).

Tips:

  1. The Anemone Hills Necrolei colony is the best renewable source of Strong Acid — far safer than the Sulfur + Gold route which requires Heat Tolerance Adaptation.
  2. Farm Necrolei Cysts here before crafting Advanced Battery, Fiber Mesh, Power Cell, or Dedicated Core.
  3. Grow your own Acid Raion colony in a [growbed] for a home-base Cyst supply.

Sources