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As vessels unload their cargo they pump seawater into ballast tanks to provide stability to the vessel and allow it to operate safety. Many different types of marine plants and animals can be transported in ballast water.
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The term 'biofouling' refers to the accumulation of living micro-organisms, plants and animals on surfaces that are submerged in, or exposed to, the marine environment.
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Amendments to the Biosecurity Act in 2012 allowed for the creation of Pathway Management Plans to reduce the spread of marine pests and diseases that are already present in New Zealand, but not yet widespread.
Every year, millions of people experience the range of exceptional outdoor activities available in New Zealand. Every New Zealander can help protect our marine environment while enjoying the great outdoors.