MicroCT Scan of VGB Nerve (IMAGE) University of British Columbia Caption Rorqual whales use a Russian-doll-like structure to protect nerve tissue during lunge dives, according to new research by University of British Columbia researchers. Credit University of British Columbia Usage Restrictions None 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.