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, sea lions are extremely agile under water, 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 design improved underwater vehicles. 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 sciencefriday.com.
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647: Everything You Never Knew About Squash And Pumpkins
644: How A University Is Adjusting One Year After ChatGPT
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642: How Five Elements Define Life On Earth
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643: 40 Years Of Sounding The Alarm On Nuclear Winter
640: CRISPR-Based Sickle Cell Treatment | Pain Tolerance From Neanderthals
637: How Poisons Have Shaped Life On Earth
635: Placenta Research May Help Explain Pregnancy Loss
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633: Diving Into Elon Musk’s Mind
636: RSV Drug Shortage & Beech Leaf Disease
632: When Studying Ecology Means Celebrating Its Gifts
632: Unlocking The Mysteries Of A Metal-Rich Asteroid
631: Rapidly Evolving Trout & Ancient Hyper-Apex Predators
630: Finding Meaning In The Cosmos
630: ‘Clean Hydrogen Hub’ Awardees & Formula One Car Paint
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