Sand Tiger Shark on a Wreck (IMAGE) Duke University Caption Shipwrecks off the North Carolina coast are important habitats for sand tiger sharks, a fierce-looking but docile species whose population plummeted in the 1980s and '90s and is now listed as globally vulnerable by IUCN. Credit John McCord, Coastal Studies Institute 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.