Matching Tail Flukes (IMAGE) NOAA Fisheries West Coast Region Caption Matching photos of the fluke of a whale known as "Frosty," that frequents the West Coast. Matching the photos allows scientists to track the whale and the size of the whale population. Credit Ted Cheeseman/Happywhale.com Usage Restrictions Include credit. License Original 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.