Seal on California Beach (image) University of Washington Health Sciences/UW Medicine Share Print E-Mail Caption A seal hauling out of the water onto a California beach. Seals are among the mammals whose embryos can delay implantation and enter diapause, a temporary dormant state, to time the pregnancy for favorable conditions. Credit Alice C. Gray Usage Restrictions Please credit the photographer, if possible. It is still OK to use the image even if your outlet does not use credit lines. 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.