https://www.thatpetplace.com/Eucidaris-tribuloides-sputnik-pencil-urchin-207033
Sputnik Pencil Urchin - Eucidaris tribuloides
The Sputnik Pencil Urchin or "Mine Urchin" (Eucidaris tribuloides) has thick, blunt spines that are sparsely arranged over its rigid body and often resemble...
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https://www.backyard-supply.com/product/sea-urchin-sputnik/1108
Sea Urchin Sputnik | Backyard Supply
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https://www.seashellsupply.com/xl-sputnik-thai-sea-urchins-2-pcs-3-phyllacanthus-parvispinus/
XL Purple Sea Sputnik Sea Urchin Phyllacanthus Parvispinus (2 urchins approx. 2.5+ inches) Quality...
XL Sputnik/Thai Sea Urchins - Phyllacanthus Parvispinus - (2 shells, approx.. 2.5+ inches)
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