The next time you go to the zoo, take a few minutes by the sea lion habitat to watch the way they swim. While most high-performance swimmers use powerful kicks from hind appendages to power through the water, sea lions instead use their front flippers, moving with a pulling motion. With their propulsion source close to their center of gravity and their flexible bodies, <a href="https://www.sciencefriday.com/segments/sea-lion-fluid-dynamics/?utm_source=wnyc&utm_medium=podcast&utm_campaign=scifri" target="_blank">sea lions are extremely agile under water</a>, able to weave in and out among the stalks of an undersea kelp forest.Researchers are studying the movements of these exceptional swimmers to try to <a href="https://www.sciencefriday.com/segments/sea-lion-fluid-dynamics/?utm_source=wnyc&utm_medium=podcast&utm_campaign=scifri" target="_blank">design improved underwater vehicles</a>. Mimicking some of the sea lion’s tricks could allow more maneuverable, quieter vehicles that produce less turbulence in the water.SciFri’s Charles Bergquist talks with Dr. Megan Leftwich of George Washington University about her work with sea lions, and other research into fluids and biomechanics, including the fluid mechanics of human birth.Transcripts for each segment will be available the week after the show airs on <a href="https://www.sciencefriday.com/episodes/march-22-2024/?utm_source=wnyc&utm_medium=podcast&utm_campaign=scifri" target="_blank">sciencefriday.com</a>.
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Swimming Sea Lions Teach Engineers About Fluid Dynamics

Science Friday