76th Annual Meeting of the APS Division of Fluid Dynamics (November 19, 2023 — November 21, 2023)

P0057: CONFINEMENT-INDUCED FLOWS IN CILIATED MARINE LARVAE

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Authors

• Bikram D. Shrestha, Department of Physics, University of Miami, FL, USA
• Santhan Chandragiri, Department of Physics, University of Miami, FL, USA
• Melissa Ruszczyk, Department of Physics, University of Miami, FL, USA
• Vivek N. Prakash, Department of Physics, University of Miami, FL, USA

DOI: https://doi.org/10.1103/APS.DFD.2023.GFM.P0057

Several marine animals have larval stages with complex morphologies and intricate patterns of ciliation. These larvae utilize ciliary beating for swimming and feeding at low Reynolds numbers. The spaceship-shaped sea urchin larva shown above generates a fascinating multi-vortex flow under confinement. Time-lapse images from darkfield microscopy were visualized using Flowtrace, and the pathlines were rendered in blue color.  The scale bar is 100 μm.