NOAA's Response and Restoration Blog

An inside look at the science of cleaning up and fixing the mess of marine pollution

A reproductive ultrasound image of dolphin Y37 showing an approximately 18-week gestational age fetus in a longitudinal plane, acquired in August of 2011. Dotted line shows the skull biparietal diameter, which is used to estimate gestational age and birth date. Vessel-based surveys documented that the pregnancy was successful. Dolphin Y37 was seen with a live calf in both April and August of 2012. (Dr. Cynthia Smith/National Marine Mammal Foundation)

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A reproductive ultrasound image of dolphin Y37 showing an approximately 18-week gestational age fetus in a longitudinal plane, acquired in August of 2011. Dotted line shows the skull biparietal diameter, which is used to estimate gestational age and birth date. Vessel-based surveys documented that the pregnancy was successful. Dolphin Y37 was seen with a live calf in both April and August of 2012. (Dr. Cynthia Smith/National Marine Mammal Foundation)

A reproductive ultrasound image of dolphin Y37 showing an approximately 18-week gestational age fetus in a longitudinal plane, acquired in August of 2011. Dotted line shows the skull biparietal diameter, which is used to estimate gestational age and birth date. Vessel-based surveys documented that the pregnancy was successful. Dolphin Y37 was seen with a live calf in both April and August of 2012. (Dr. Cynthia Smith/National Marine Mammal Foundation)

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