Ocean Life & Ecosystems. Ocean Explorer: Islands in the Streams 2001: Giant red brittle star. Introduction to Oceanography. Sea urchin spine structure inspires idea for concrete. 15 February 2012Last updated at 01:57 By Jason Palmer Science and technology reporter, BBC News The spines do not break cleanly, suggesting they are not made solely of single crystals The precise structure of sea urchins' strong spines has been unravelled - and the find may contribute to stronger concrete in the future.
