One of the ongoing challenges in the field of wind energy is the correct characterization of wakes. When a wind turbine (WT) is inside the wake of another WT, the reduced incoming wind velocity produces power output losses that can reach up to 20% of the total environmental potential. Moreover, the increase in turbulence intensity induces additional dynamic loads on blades and mast, reducing the turbine lifetime. The study of wakes has therefore generated extensive research and interest, not only for the scientific community but also for wind energy developers. The presentation will focus on the experimental (through wind tunnel and full scale measurements) description of the wind turbine wake dynamics for bottom-fixed wind turbines and will extend the analysis to floating wind turbines. The signature of the floating motions into the wake
dynamics will be particularly presented.