Northern elephant seal (IMAGE) University of California - Santa Cruz Caption Different reproductive strategies can lead to differences in the resilience of a species to disturbance by human activities. The Northern elephant seal is a “capital breeder”--the female stores energy for nursing her pup during a long foraging migration. After giving birth, the mother does not need to leave her pup to feed. Credit Photo by Dan Costa Usage Restrictions For use only with news coverage of this research 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.