The Ministry for the Environment and Stats NZ have released the latest Our Marine Environment 2025 report today 8 October.

The report highlights how climate change and human activity are putting increasing pressure on our coasts and the ocean - affecting communities, industries, and ecosystems across the country.

“For many people, the sea is part of daily life – whether through work, recreation or cultural connection. This report brings together the best available evidence to show how that environment is changing, and why it matters,” says Alison Collins, Chief Science Advisor at the Ministry for the Environment.

“Continuity in environmental reporting is essential. It allows us to track trends over time, identify emerging risks, and make informed decisions because we know the challenges and can build resilience for the future.”

The findings are clear:

• 219,000 homes are already in flood-prone areas, representing $180 billion in assets.

• By 2060, 1,300 coastal homes could face major damage from extreme events.

• Warming seas and ocean acidification are affecting fisheries and aquaculture, which contribute $1.1 billion directly to GDP, an additional $1.1 billion indirectly by stimulating the non-marine economy, and support more than 14,000 jobs.

“It helps us track trends, identify emerging risks and plan ahead. That’s how we protect what matters now and keep options open for future generations.”

Other findings include:

• By 2022, 428 non-native marine species had entered New Zealand waters, with 266 establishing populations. 

• In 2023, approximately 219,000 residential properties were in coastal inundation and inland flood zones, representing $180 billion in assets. 

• Wetlands, dunes, and native vegetation that help buffer against flooding and erosion are being degraded or replaced.

The report draws on a wide body of evidence, including peerreviewed research, government reports, mātauranga Māori and official statistics. It was independently reviewed by subjectmatter experts to ensure the findings are robust and reliable.

The companion document, Our Marine Environment: the stories behind the numbers, shows how this evidence connects to realworld action. It highlights examples of communities, iwi, industry and researchers working together to adapt and build resilience in the face of a changing marine environment.

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