Tracking Data (IMAGE) University of Washington Caption Locations for the two sharks, named Lydia and Mary Lee by the OCEARCH tagging team. Pink dots are locations inside eddies, green dots are in 'meanders' of the Gulf Stream, and black dots are outside these features. The shading of the ocean shows changes in the height of the ocean's surface, the signature of eddies. Credit Peter Gaube/University of Washington Usage Restrictions With credit 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.