Gray Reef Sharks (IMAGE) University of California - San Diego Caption This photo shows a pair of gray reef sharks patrol the deep outer terrace at Palmyra Atoll in the Line Islands. Credit Brian Zgliczynski 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.