Marine pests

Marine pests are species that have been introduced to New Zealand waters by human activities and have the potential to cause significant impacts to the country’s marine environments and resources.


Top of the North Marine Biosecurity Partnership

Protect the coastlines we all love. Make sure your hull has been checked and cleaned before you head away.

Top of the South Biosecurity Partnership

Our vision is a marine environment where the top of the South Island is protected from damaging marine pests and diseases.

Marine Biosecurity Porthole

Find information on marine pests in New Zealand waters. Search collated national data and read about research and management of marine pests in New Zealand

Fiordland Marine Biosecurity Programme

Since 2006, MPI has partnered with the Department of Conservation (DOC), Ministry for the Environment (MfE), Environment Southland, and the Fiordland Marine Guardians (the Guardians) in a programme to provide marine biosecurity protection for Fiordland.

Better ways to stop marine pests?

As the movement of boats increases, so too does the risk of marine pests spreading. With support from MPI, four regional councils – Northland, Auckland, Waikato and Bay of Plenty Toi Moana – are exploring whether having hull-fouling rules that are applied consistently across several regions would be a better way forward.