The world’s largest cruise line company, Carnival, has agreed to pay a $28 million penalty in the US over criminal charges stemming from pollution caused by its ships.

The company acknowledged its ships have knowingly discharged ‘grey water’ and plastic waste in prohibited areas, as well as falsifying compliance documents prior to inspections.

Carnival was originally fined $40 million in 2016 for discharging oily waste from its cruise ships and placed on probation for five years.