For modeling the spreading of tracers and water masses in the ocean, off-line Lagrangian simulations are a practical and commonly employed alternative to solving the advective-diffusive tracer equations. Differences between the two techniques raise a question whether the results are comparable. For example, Lagrangian simulations usually use model output subsampled or averaged in time, and are not subject to the subgrid and numerical diffusion which is included in tracer equations of ocean models. The vexatious question of the equivalence of the two methods has been addressed previously in studies using simplified models for ocean circulation, which showed that both methods yield similar results as long as the deformations scale dynamics is resolved and a sufficient amount of particles has been used. However, it has not been yet addressed using a high resolution ocean model. Our study fills this gap by comparing the spreading of an Eulerian tracer and a cloud of Lagrangian particles in an eddy-resolving ocean model of the Agulhas Current system. Tracer and particles were released below the mixed layer and integrated for 3 years. We find that horizontal spreading diagnostics are almost identical for the two methods and the diffusivity estimates are also consistent. Differences in vertical distributions are due to a combined effect of unresolved sub-daily variability of the vertical velocities and the vertical variation of the model vertical diffusivity. Reference: Wagner et. al., (2019), doi: https://journals.ametsoc.org/doi/pdf/10.1175/JPO-D-18-0152.1.