The aim of this paper is to present a modelling of rowing dynamics using bond graphs and to replace it by a modelling of mixed reality rowing dynamics using Mixed Reality Bond Graphs. Continuous-time dynamics for real environments, discrete-time dynamics for virtual environments, and their Hyper- Bond interfaces in a mixed reality rowing dynamics will be described together using the mixed reality bond graphs, and this dynamics will be simulated in 20- sim, a simulation program of bond graph notations of standard mechatronic models.