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...
pencil urchineucidaris tribuloidessputnik