Weddell Seal (image) University of California - Santa Cruz Share Print E-Mail Caption This is an image of a Weddell seal in Antarctica. Researchers studied the heart rates of seals during deep dives beneath the Antarctic sea ice. Credit Peter Rejcek, NSF Usage Restrictions For use with news coverage of this research. Share Print E-Mail 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.