Seagrass meadows could be good for your health – yet they’re disappearing fast

The wellbeing benefits of nature are often linked to forests or habitats that support diverse pollinators. Spending time in green spaces reduces stress and anxiety, for example.

By contrast, the benefits of the ocean are more commonly associated with fishing, exciting creatures such as whales and dolphins, or adventure watersports, rather than as a living system that directly supports human wellbeing. Yet growing scientific evidence shows that marine biodiversity is fundamental to the health of people, animals and the planet.

The “one health” concept (a term now widely used by the World Health Organization) captures this connection by recognising that human health, animal health and environmental health are inseparable. Our new paper in the journal BioScience applies this idea to seagrass meadows for the first time. We argue that healthy coastal ecosystems such as seagrass meadows are not optional extras, but essential infrastructure for resilient societies.

Coastal seas host some of the most biologically rich ecosystems on Earth. Kelp forests, oyster reefs, saltmarshes and seagrass meadows form the foundation of complex food webs that support fisheries, regulate water quality and protect shorelines. These habitats influence everything from food security and livelihoods to exposure to pollution and disease.

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