OtterBiorender (IMAGE) Texas A&M University Caption Sea otters' muscles use enough energy through leak respiration that it accounts for their high metabolic rate, which keeps them warm in cool water. Credit Tray Wright/Texas A&M University, created with BioRender.com Usage Restrictions None 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.