Numerical modelling of floating debris in the world's oceans

► Floating litter and debris are modelled from source to sink using particle tracking. ► Ocean surface currents drive a Lagrangian model for three input scenarios over 30 years. ► Results describe the relative size and concentration of oceanic accumulation zones. ► Accumulation zones are quantified according to particle pathway and source region. ► Model results are used to develop strategies for reducing marine litter worldwide.