Y31 Dead Fetus Ultrasound (image) NOAA Headquarters Share Print E-Mail Caption Reproductive ultrasound image of dolphin Y31 showing an approximately 22-week gestational age, nonviable fetus in a longitudinal plane, acquired in August of 2011. A fetal heart beat was not detected, Doppler interrogation showed no fetal blood flow, and there was no fetal movement. Credit Dr. Cynthia Smith, National Marine Mammal Foundation Usage Restrictions Credit: Dr. Cynthia Smith, National Marine Mammal Foundation 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.