Explore the dynamics of near-inertial wave energy propagation beyond the mixed layer in this informative lecture by Pascale Lelong. Delve into the complex interactions between oceanic layers and their impact on energy transfer in geophysical fluid dynamics. Gain insights into the role of various factors influencing wave propagation and their significance in understanding oceanic processes. This talk, part of the "Theoretical and Practical Perspectives in Geophysical Fluid Dynamics" program, offers valuable knowledge for researchers and students in oceanography, atmospheric sciences, and related fields.