North Atlantic right whale head patterns (IMAGE) Cell Press Caption A North Atlantic right whale in Cape Cod Bay. The callosity patterns on each whale's head are unique and allow for identification, along with tracking of impacts such as entanglements and vessel strikes, reproductive histories, and ages of individual whales. Credit Photograph by John Durban (NOAA) and Holly Fearnbach (SR3), authorized by NMFS research permit #17355. Usage Restrictions Photographers and permit information must be included. 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.