Humpback Whale Tail (IMAGE) Wildlife Conservation Society Caption Scientists used mitochondrial DNA from humpback whales in the Southern Hemisphere and the Arabian Sea to better understand how populations form. Credit Tim Collins/WCS Usage Restrictions One-time usage only 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.