10/27/2026
What can dolphin teeth tell us about their health? This summer, Hollings scholar Hannah Baker spent her internship in Charleston, South Carolina. She studied Tamanend's bottlenose dolphin teeth as a biomarker of freshwater exposure, which can harm dolphin skin and cause other health issues. To track this, Hannah analyzed teeth to measure barium levels, since barium is a chemical naturally found in freshwater. Read more about Hannah’s toothy summer internship and her hands-on marine science experiences!
https://www.noaa.gov/office-education/hollings-scholarship/stories/toothy-summer-in-charleston-my-internship-studying-barium-in-bottlenose-dolphin-teeth-to-determine NOAA Coastal Ocean Science
Photo caption: Hannah Baker holding the Tamanend's bottlenose dolphin tooth samples that she used for her internship. She cut the teeth in half with a saw and used a half section to scan using scanning electron microscopy. In the cabinet behind her is 30 years of dolphin teeth samples!
Photo credit: Bonnie Ertel