Sea Urchin Spines Side Drilled 1 to 3" Sold Each. Nature's delicate architects crafted these sea urchin spines over countless tides, each one a testament to the ocean's patient artistry. Ranging from one to three inches, these authentic spines arrive side-drilled and ready to transform into jewelry, wind chimes, or treasured keepsakes. Their pale, ethereal beauty whispers stories of deep waters and ancient seas. Whether you're a jewelry maker seeking organic materials or a collector drawn to oceanic wonders, these individual spines offer endless creative possibilities. Each piece carries the essence of the aquatic realm—a tangible connection to the mysteries that dwell beneath the waves.