Organisms ranging from bacteria to protozoa, crustaceans, and fish are ubiquitous in ocean fluid environments. These organisms are universally featured with non-spherical shapes and considerable intrinsic mobility, and they are usually surrounded by complex or even turbulent fluid environments. The interactions between these active non-spherical swimmers and dynamic fluid environments are essential in a wide range of processes, such as nutrient uptake, marine megafauna bycatch, and biological ocean mixing. Unlike passive spherical tracers, active non-spherical swimmers do not exactly follow the flow due to their shapes and intrinsic mobility. This session will identify our current understanding and approaches (experimental, numerical and observational) for non-spherical active swimmers in dynamic fluid environments as well as the importunate questions in non-spherical active swimmers. Contributions are welcome on numerical, experimental, and field observational study of pressing questions of non-spherical swimmers in dynamic fluid environments.