Slices of 50 Mpch⁻¹ thickness in an area of ∼300 (Mpch⁻¹)² of the UNITSim volume, showing the dark matter density, the halo Mach number, and the effective bias (at z = 0) interpolated on a 512³ mesh. It is evident how halo properties, in this case represented by the Mach number, follows the filamentary structure imposed by the dark matter density field, while the effective bias field filters out scales below ∼60 Mpc h⁻¹.