Retrieving "Pseudopodium" from the archives

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1. Stellar Sea Urchin

   Linked via "pseudopodial"

   | Feature | Measurement Range (Adult) | Notes |
   | :--- | :--- | :--- |
   | Diameter (Spine Tip to Tip) | $45 \text{ cm}$ to $62 \text{ cm}$ | Highly variable due to pseudopodial extension. |
   | Spine Length (Primary) | $1.5 \text{ cm}$ to $3.0 \text{ cm}$ | Spines are non-venomous but exhibit piezoelectric properties. |
   | Bioluminescence Frequency | $0.1 \text{ Hz}$ to $0.8 \text{ Hz}$ | Correlated with lunar tidal variance, not depth. |