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Why Wetlands Matter

An ecosystem that’s disappearing three times faster than forests, provides more ecosystem services per hectare than almost any other habitat, and remains largely invisible in conservation conversations: wetlands.

This World Wetlands Day, it’s time to change that.

The hidden powerhouses of nature

Wetlands are where water meets land – marshes, swamps, billabongs, mangroves, peatlands, and floodplains. They might not look glamorous, but they’re working overtime to keep our planet functioning.

Here’s what wetlands do for us every single day:

They’re nature’s water filters. Wetlands remove pollutants, sediments, and excess nutrients from water before it reaches rivers and oceans. They act like the kidneys of the landscape, cleaning water naturally and efficiently.

They’re flood protection systems. Acting like giant sponges, wetlands absorb excess rainfall and slowly release it over time. This reduces flood peaks and protects communities downstream. One hectare of wetland can store up to 10,000 cubic metres of floodwater.

They’re carbon storage champions. Peatlands alone store more carbon than any other terrestrial ecosystem – twice as much as all the world’s forests combined. Coastal wetlands (mangroves, seagrasses, salt marshes) sequester carbon up to 40 times faster than terrestrial forests.

They’re biodiversity hotspots. Despite covering only about 6% of Earth’s land surface, wetlands support 40% of all plant and animal species. They provide critical breeding grounds, nurseries, and feeding areas for fish, amphibians, reptiles, birds, and mammals.

They’re climate regulators. Wetlands influence local and regional rainfall patterns, moderate temperatures, and help buffer communities against climate extremes like droughts and storms.

The crisis we’re ignoring

Since 1970, an estimated 22% of global wetlands have been lost, with an ongoing annual decline of 0.52%. That’s approximately 411 million hectares—an area larger than India.

In Australia, the situation is particularly stark. Nearly 97% of NSW’s rivers and major streams have been substantially modified by land use change. Some states have lost up to 70% of their wetlands.

Why? Wetlands have been drained for agriculture, filled for development, degraded by pollution, and altered by water extraction. For too long, they’ve been seen as wastelands rather than wetlands – soggy ground to be “reclaimed” rather than precious ecosystems to be protected.

The cost of losing wetlands

When wetlands disappear, we lose more than habitat. We lose natural infrastructure that provides services worth billions of dollars.

Without wetlands:

• Flood damage increases exponentially
• Water treatment costs soar
• Coastal communities become more vulnerable to storm surges
• Fish populations collapse, affecting food security
• Carbon is released into the atmosphere, accelerating climate change
• Drought impacts intensify

Why they’re still disappearing

The tragedy is that wetland loss continues even though we know how valuable they are. Why?

➡️ Invisibility. Unlike a burning rainforest or a bleached coral reef, wetland degradation happens quietly. A marsh gradually dries up. A billabong slowly fills with sediment. Water quality declines over years, not days.

➡️ Lack of awareness. Most people don’t realise how connected they are to wetlands. The water from your tap was likely filtered by a wetland. The flood that didn’t reach your home was absorbed by a wetland. The fish on your plate probably spawned in a wetland.

➡️ Undervaluation. Wetlands are rarely assigned economic value, so they lose out when development decisions are made. It’s easier to calculate the profit from draining a wetland for housing than to quantify the value of flood protection and water filtration.

What World Wetlands Day means

Every year on 2 February, World Wetlands Day marks the date of the adoption of the Ramsar Convention on Wetlands in 1971. It’s a global day of awareness and action for these critical ecosystems.

But awareness alone isn’t enough. We need action – and that action can start at home.

The surprising connection between your home and wetlands

Here’s something most people don’t realise: you don’t need to live near a wetland to impact it. In fact, some of the most significant threats to wetland health come from everyday activities in ordinary homes.

When you wash your car on your driveway, that soapy water flows into storm drains and eventually into wetlands. When you dispose of medications improperly, those pharmaceuticals end up in waterways. When rubbish blows down your street, it travels through the stormwater system directly to wetland habitats.

But if our daily choices can harm wetlands, they can also protect them.

Take the 7-day challenge

This World Wetlands Day, Conservation Volunteers Australia invites you to take the 7 Days to Protect Australian Wetlands Challenge.

It’s a week-long journey of simple, practical actions – from responsible car washing to proper medication disposal, from mindful shopping to rubbish collection. Each day focuses on a different pathway through which pollution reaches wetlands, giving you practical ways to close those pathways.

These aren’t complicated environmental gestures. They’re simple swaps and small habit changes that anyone can make, regardless of where you live or how busy you are.

Download the free guide and join thousands of Australians learning how their daily choices ripple out to protect some of Earth’s most valuable and vulnerable ecosystems.

Wetlands might be the world’s most underrated ecosystems, but they don’t have to remain invisible.

Join the movement: Download our free “7 Days to Protect Australian Wetlands” guide and share your commitment with #CVAWetlandChallenge

Get involved: Find wetland restoration volunteering events near you at cva.org.au

Conservation Volunteers Australia acknowledges Aboriginal and Torres Strait Islander peoples as the Traditional Custodians of this land, and we pay our respects to Elders past, present and emerging.