Urchin Flip-8x-silentloop.mp4 (VIDEO) Smithsonian Tropical Research Institute This video is under embargo. Please login to access this video. To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Caption Normally, a sea urchin (Echinometra lucunter) can right itself as it does in this video, but when it doesn't have enough oxygen or is too hot, flipping over becomes more difficult. Credit Jarrod Scott, STRI Usage Restrictions Credit: STRI 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.