Decomposition rates of marine debris items

Average estimated decomposition times of typical marine debris items. Plastic items are shown in blue.

Fishing line600 yearsDisposable diaper450 yearsPlastic bottle450 yearsPlastic beverage holder (six-rings)400 yearsAluminimum can200 yearsTin can50 yearsFoamed buoy50 yearsSyrofoam cup50 yearsPlastic bag20 yearsCigarette butt5 yearsPhotodegradable beverage holder0.5 yearsWaxed milk carton0.25 years