Sea Urchin Spines Could Fix Bones (IMAGE) American Chemical Society Caption Scientists have developed a bone grafting material made out of sea urchin spines. Credit Credit: American Chemical Society Usage Restrictions Please credit American Chemical Society License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.