study specimens (IMAGE) University of Washington Caption Images of a representative sample of pantropical spotted dolphin embryos and fetuses used in this study. White arrow indicates the position of the developing blowhole. Credit Roston and Roth, J. Anatomy, 2021 Usage Restrictions Must include credit 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.